Today's Message Index:
----------------------
1. 04:25 AM - Re: Re: chutes (Stuart Mackereth)
2. 05:10 AM - Re: Re: chutes (Kevin Pilling)
3. 05:56 AM - Ummff issue. (FOUGAPILOT@aol.com)
4. 06:01 AM - Yak 50 Air Bottle Failure (Kevin Pilling)
5. 06:35 AM - Re: Yak 50 Air Bottle Failure (Walt Fricke)
6. 07:25 AM - 4th Annual Yak "Discovery" Fly-in (PDumoret)
7. 07:25 AM - Re: Yak 50 Air Bottle Failure (Lee Taylor)
8. 07:31 AM - Re: Ummff issue. (A. Dennis Savarese)
9. 07:41 AM - Re: Yak-List Digest: 19 Msgs - 08/26/03 (John W Finley)
10. 07:44 AM - Re: 4th Annual Yak "Discovery" (Terry Calloway)
11. 07:44 AM - Re: Yak 50 Air Bottle Failure (Brian Lloyd)
12. 07:48 AM - Re: Yak 50 Air Bottle Failure (A. Dennis Savarese)
13. 08:40 AM - Re: Yak-List Digest: 19 Msgs - 08/26/03 (Skipsly@aol.com)
14. 08:47 AM - Re: Yak 50 Air Bottle Failure (Genzlinger, Reade)
15. 09:43 AM - Re: Yak 50 Air Bottle Failure (Doug)
16. 10:08 AM - Panther CATS headset (Michael Di Marco)
17. 10:10 AM - LOAs and Type Ratings (Michael Di Marco)
18. 10:16 AM - Re: Yak 50 Air Bottle Failure (Walt Lannon)
19. 11:04 AM - Fw: Yak 50 Air Bottle Failure (Doug)
20. 11:08 AM - Re: Yak 50 Air Bottle Failure (Ernie)
21. 11:15 AM - Re: LOAs and Type Ratings (Ernie)
22. 11:19 AM - Rangerette Richard (Brian Lloyd)
23. 11:24 AM - Re: Yak 50 Air Bottle Failure (Brian Lloyd)
24. 11:25 AM - Re: Yak 50 Air Bottle Failure (Jon Boede)
25. 11:28 AM - Re: Panther CATS headset (Brian Lloyd)
26. 11:30 AM - Re: Panther CATS headset (Brian Lloyd)
27. 11:54 AM - Re: Panther CATS headset (Michael Di Marco)
28. 11:58 AM - Re: Yak 50 Air Bottle Failure (Coffey, John)
29. 01:44 PM - Re: SA problems (Jorgen Nielsen @ Mweb)
30. 01:56 PM - Re: Panther CATS headset (Brian Lloyd)
31. 02:07 PM - More in support of "Red Star" (ByronMFox@aol.com)
32. 02:29 PM - Re: Yak 50 Air Bottle Failure ()
33. 02:29 PM - Re: More in support of 'Red Star' (Jon Boede)
34. 02:36 PM - Re: Yak 50 Air Bottle Failure ()
35. 02:43 PM - Re: Panther CATS headset (Jim Ivey)
36. 02:57 PM - Re: More in support of 'Red Star' (Brian Lloyd)
37. 03:11 PM - Re: Yak 50 Air Bottle Failure (ron wasson)
38. 03:28 PM - Yak 50 Air Bottle Failure (Frank Haertlein)
39. 03:34 PM - Re: Yak 50 Air Bottle Failure (Frank Haertlein)
40. 04:01 PM - Re: Yak 50 Air Bottle Failure (A. Dennis Savarese)
41. 04:40 PM - Re: Yak 50 Air Bottle Failure (Brian Lloyd)
42. 05:21 PM - Re: Yak 50 Air Bottle Failure (A. Dennis Savarese)
43. 06:03 PM - Re: Yak 50 Air Bottle Failure (Gus Fraser)
44. 06:03 PM - Re: Yak 50 Air Bottle Failure (pop off valve) (Gus Fraser)
45. 08:26 PM - Re: Ummff issue. (Walt Lannon)
46. 08:33 PM - Re: Yak 50 Air Bottle Failure (Brian Lloyd)
Message 1
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--> Yak-List message posted by: "Stuart Mackereth" <stuart@bramptonyork.com>
Hey Jerry - heard about that Zlin incident when I was looking to buy a
142 here.
Was that the one that caused the requirement for wings to be replaced
every 190 hours?
This was was got me looking at Yaks.. What a good move.. So I'll be sure
to send him my thanks..
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Jerry Painter
Subject: Yak-List: RE: chutes
--> Yak-List message posted by: "Jerry Painter" <wild.blue@verizon.net>
Stuart,
The problem with Russian/Chinese/anything by US certificated chutes is
no one will pack 'em.
I spose we could say chutes are just bad cushions so what the hell. Fly
naked! The Brits used to go without 'til Neil Williams had the spar
break on his Zlin and had to land it at the end of a roll away from the
folded wing after flying the approach inverted. I don't think they
called him "Pinkie" (sorry Brian).
Jerry Painter
Message 2
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--> Yak-List message posted by: "Kevin Pilling" <kjpilling@btclick.com>
Sadly the great Neil Williams lost his life in a Heinkell/Casa ferrying
flight some years ago.
kp
----- Original Message -----
From: "Stuart Mackereth" <stuart@bramptonyork.com>
Subject: RE: Yak-List: RE: chutes
> --> Yak-List message posted by: "Stuart Mackereth"
<stuart@bramptonyork.com>
>
> Hey Jerry - heard about that Zlin incident when I was looking to buy a
> 142 here.
> Was that the one that caused the requirement for wings to be replaced
> every 190 hours?
>
> This was was got me looking at Yaks.. What a good move.. So I'll be sure
> to send him my thanks..
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Jerry Painter
> To: yak-list@matronics.com
> Subject: Yak-List: RE: chutes
>
>
> --> Yak-List message posted by: "Jerry Painter" <wild.blue@verizon.net>
>
> Stuart,
>
> The problem with Russian/Chinese/anything by US certificated chutes is
> no one will pack 'em.
>
> I spose we could say chutes are just bad cushions so what the hell. Fly
> naked! The Brits used to go without 'til Neil Williams had the spar
> break on his Zlin and had to land it at the end of a roll away from the
> folded wing after flying the approach inverted. I don't think they
> called him "Pinkie" (sorry Brian).
>
> Jerry Painter
>
>
Message 3
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--> Yak-List message posted by: FOUGAPILOT@aol.com
Greeting one and all,
Those whom flew with me at MTW/OSH recognisees as I did that my M14 equipped
CJ definitely has a power issue. Well, we did find what the problem is, we
simply don't know what causes it. As suspected, my RPM gauge is at fault. When
takeoff power it set, my engine only turns 2500rpm. Yep, you read right, I
am missing a whole 450rpm, that will do it wont it? We measured the prop RPM
and transferred it to engine RPM using the ratio published in the maintenance
manual. My manifold pressure is also lower then it should, but with the blower
turning so slow it only makes sense. We first looked at the prop setting and
the throttle settings, and both appear to be correctly set.
Any body ever heard of this before?
Dan "performance challenged" Fortin
Message 4
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| Subject: | Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "Kevin Pilling" <kjpilling@btclick.com>
BlankAll Yaksters this is a WAKE UP CALL.
After a 7-10 minute engine warm up in my 1985 Yak 50 the service air bottle suffered
a catastrophic failure at the normal 45 bar working pressure. The explosive
force fired part of the reservoir bottle out through the lower fuselage destroying
the left lower firewall and engine mounting and part up into the fuel
tank area lodging itself partway through the fuselage skin. Other parts passed
out through the hull leaving holes as their only witnesses. Debris destroyed
the throttle linkage forcing the engine to max power which immediately raised
the tail bringing the propeller into contact with the ground. Pilot shut down
the engine with the mag switches and aircraft came to a rest just 2 metres from
the initial point but now in a tail high nose on the ground attitude. Rescuers
lowered the aircraft into the correct attitude and pilot vacated..
Debris damaged a parked Volvo some 30-40 feet away.
The purpose of the intended flight was to carry out a formation display over the
English Channel and then to depart off slot to Rotterdam (one hour over water
transit) for a further over water display. The aircraft had completed two, one
hour transits over the North Sea just 10 days prior.
I leave you to muse the implications.
I have posted pictures to the Photo Share site but these will be as couple of days
being published.
Ignore the obvious implications at your peril.
Fly Safe
kp
Message 5
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| Subject: | Re: Yak 50 Air Bottle Failure |
--> Yak-List message posted by: Walt Fricke <walterfricke@yahoo.com>
Anybody know where you can get new air bottles for a Yak 50? I think they are
smaller than the 52 bottles?
Kevin Pilling <kjpilling@btclick.com> wrote:
--> Yak-List message posted by: "Kevin Pilling"
BlankAll Yaksters this is a WAKE UP CALL.
After a 7-10 minute engine warm up in my 1985 Yak 50 the service air bottle suffered
a catastrophic failure at the normal 45 bar working pressure. The explosive
force fired part of the reservoir bottle out through the lower fuselage destroying
the left lower firewall and engine mounting and part up into the fuel
tank area lodging itself partway through the fuselage skin. Other parts passed
out through the hull leaving holes as their only witnesses. Debris destroyed
the throttle linkage forcing the engine to max power which immediately raised
the tail bringing the propeller into contact with the ground. Pilot shut down
the engine with the mag switches and aircraft came to a rest just 2 metres from
the initial point but now in a tail high nose on the ground attitude. Rescuers
lowered the aircraft into the correct attitude and pilot vacated..
Debris damaged a parked Volvo some 30-40 feet away.
The purpose of the intended flight was to carry out a formation display over the
English Channel and then to depart off slot to Rotterdam (one hour over water
transit) for a further over water display. The aircraft had completed two, one
hour transits over the North Sea just 10 days prior.
I leave you to muse the implications.
I have posted pictures to the Photo Share site but these will be as couple of days
being published.
Ignore the obvious implications at your peril.
Fly Safe
kp
---------------------------------
Message 6
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| Subject: | 4th Annual Yak "Discovery" Fly-in |
tests=HTML_10_20,HTML_MESSAGE,USER_IN_WHITELIST
version=2.55
--> Yak-List message posted by: "PDumoret" <3bar@direct.ca>
Hi Gang,
Just saw John Northey this last weekend and want to let everyone know the agenda.
Friday AM is the formation clinic and this year is sanctioned as we have the
honor of Skip Slyfield joining us with his CJ. Skip is a Lead and Check-Pilot
so we can card some more guys who qualify for FAST. That clinic will be at 0830
Friday. Flying for the rest of the day, and Paul won't park anywhere other
than the ramp. Saturday AM at 0830 we will have a clinic by the renowned Pieter
Herzig on "Demystifying Spins" (God he is a mystery man himself going away
and coming back like gangbusters. Flying for the rest of Sat. except an address
by Kevin Psutka, CEO of COPA who joins us Sat PM. Delighted to have Kevin join
us. No "ACM" this year (go figger!!). WE also have Diane, the acctractive blond
from year one entertaining us this year - great to have her back (watch it
Walt). and the best is that we throw out an incentive to "Goldfinger" Sapp to
have his Miniyak flyable and we will pay his Transport Canada fees. (we can't
stand another year of whining!!)
Any questions, please call. 250-490-0005.
Paul
Message 7
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| Subject: | Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "Lee Taylor " <leetay1@idcomm.com>
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Kevin Pilling
Subject: Yak-List: Yak 50 Air Bottle Failure
--> Yak-List message posted by: "Kevin Pilling" <kjpilling@btclick.com>
BlankAll Yaksters this is a WAKE UP CALL.
After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
bottle suffered a catastrophic failure at the normal 45 bar working
pressure. The explosive force fired part of the reservoir bottle out
through the lower fuselage destroying the left lower firewall and engine
mounting and part up into the fuel tank area lodging itself partway
through the fuselage skin. Other parts passed out through the hull
leaving holes as their only witnesses. Debris destroyed the throttle
linkage forcing the engine to max power which immediately raised the
tail bringing the propeller into contact with the ground. Pilot shut
down the engine with the mag switches and aircraft came to a rest just 2
metres from the initial point but now in a tail high nose on the ground
attitude. Rescuers lowered the aircraft into the correct attitude and
pilot vacated..
Debris damaged a parked Volvo some 30-40 feet away.
The purpose of the intended flight was to carry out a formation display
over the English Channel and then to depart off slot to Rotterdam (one
hour over water transit) for a further over water display. The aircraft
had completed two, one hour transits over the North Sea just 10 days
prior.
I leave you to muse the implications.
I have posted pictures to the Photo Share site but these will be as
couple of days being published.
Ignore the obvious implications at your peril.
Fly Safe
kp
Wow. How many times does it have to be proved to us that ONLY
when it is time, are we going to go?
Lee Taylor
Message 8
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| Subject: | Re: Ummff issue. |
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
Dan,
Which M14 do you have and did you check which type of mags are on it?
Standard M9F's or M9-35's? The -35's are centrifugal advance and set ATDC
based on a calculation using the number of degrees stamped in the casting
under the top cover vs. the standard M9F's which are set to 14-16 degrees
before TDC. Each -35 mag can have a different number stamped in the casting
including the two mags on any engine. Thus you may have to time the -35's
on an engine individually based on the degree stamp in the casting under the
cover versus synchronizing them together. Don't assume both are the same.
Dennis Savarese
----- Original Message -----
From: <FOUGAPILOT@aol.com>
Subject: Yak-List: Ummff issue.
> --> Yak-List message posted by: FOUGAPILOT@aol.com
>
> Greeting one and all,
>
> Those whom flew with me at MTW/OSH recognisees as I did that my M14
equipped
> CJ definitely has a power issue. Well, we did find what the problem is,
we
> simply don't know what causes it. As suspected, my RPM gauge is at fault.
When
> takeoff power it set, my engine only turns 2500rpm. Yep, you read right,
I
> am missing a whole 450rpm, that will do it wont it? We measured the prop
RPM
> and transferred it to engine RPM using the ratio published in the
maintenance
> manual. My manifold pressure is also lower then it should, but with the
blower
> turning so slow it only makes sense. We first looked at the prop setting
and
> the throttle settings, and both appear to be correctly set.
>
> Any body ever heard of this before?
>
> Dan "performance challenged" Fortin
>
>
Message 9
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| Subject: | Re: Yak-List Digest: 19 Msgs - 08/26/03 |
--> Yak-List message posted by: John W Finley <finleycj6@juno.com>
RE: Metric screws from Aaron's.....I had bought some 5mm Truss Head
(stainless) screws from Aaron's and they sent me cad plated screws
instead, which are far cheaper than stainless. I paid the stainless
price. I called them twice for replacement, even sent the Cad Plated
screws back to them but they never made the error good. Watch out!
Business integrity is the issue.....John
Message 10
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| Subject: | Re: 4th Annual Yak "Discovery" |
Fly-intests=HTML_10_20,HTML_MESSAGE,USER_IN_WHITELISTversion=2.
--> Yak-List message posted by: "Terry Calloway" <TCalloway@datatechnique.com>
***** --> Yak-List message posted by: "PDumoret" < 3bar@direct.ca >
***** we have the honor of Skip Slyfield joining us with his CJ.
What has he told these folks? Geezz. I didn't realize it was a
celiberty fly-in.
tc
Message 11
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| Subject: | Re: Yak 50 Air Bottle Failure |
--> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
Lee Taylor wrote:
> Wow. How many times does it have to be proved to us that ONLY
> when it is time, are we going to go?
Actually, a regular exterior exam and interior borescope exam of the bottle probably
would have prevented this. I suspect a hydrostatic test might have as well.
The CJ maintenance manual talks about examining the bottles and the criteria
for rejection but I doubt many people perform the tests and/or the required
maintenance.
--
Brian Lloyd 6501 Red Hook Plaza, Suite 201
brian@lloyd.com St. Thomas, VI 00802
+1.340.998.9447 - voice +1.360.838.9669 - fax
GMT-4
Message 12
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| Subject: | Re: Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
Probably a good idea to check the date stamps and to have our tanks
periodically pressure tested as well. Thank goodness it didn't happen in a
52 with someone in the rear seat!
Dennis
----- Original Message -----
From: "Kevin Pilling" <kjpilling@btclick.com>
Subject: Yak-List: Yak 50 Air Bottle Failure
> --> Yak-List message posted by: "Kevin Pilling" <kjpilling@btclick.com>
>
> BlankAll Yaksters this is a WAKE UP CALL.
>
> After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
bottle suffered a catastrophic failure at the normal 45 bar working
pressure. The explosive force fired part of the reservoir bottle out through
the lower fuselage destroying the left lower firewall and engine mounting
and part up into the fuel tank area lodging itself partway through the
fuselage skin. Other parts passed out through the hull leaving holes as
their only witnesses. Debris destroyed the throttle linkage forcing the
engine to max power which immediately raised the tail bringing the propeller
into contact with the ground. Pilot shut down the engine with the mag
switches and aircraft came to a rest just 2 metres from the initial point
but now in a tail high nose on the ground attitude. Rescuers lowered the
aircraft into the correct attitude and pilot vacated..
> Debris damaged a parked Volvo some 30-40 feet away.
>
> The purpose of the intended flight was to carry out a formation display
over the English Channel and then to depart off slot to Rotterdam (one hour
over water transit) for a further over water display. The aircraft had
completed two, one hour transits over the North Sea just 10 days prior.
>
> I leave you to muse the implications.
>
> I have posted pictures to the Photo Share site but these will be as couple
of days being published.
>
> Ignore the obvious implications at your peril.
>
> Fly Safe
> kp
>
>
Message 13
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| Subject: | Re: Yak-List Digest: 19 Msgs - 08/26/03 |
--> Yak-List message posted by: Skipsly@aol.com
In a message dated 08/27/2003 3:59:33 AM Atlantic Daylight Time,
yak-list-digest@matronics.com writes:
> (as I unzip my mauve Kermel flightsuit about three inches to properly
> display my ascot), that I will never have to buy my own fruity boat drinks
> with the little parasols again.
> >
Mauve? Oh, Sparky! Could you TRY to be a little more butch? I prefer "salmon"
myself, like those desert thngies the boys wear nowadays.
Rangerette Richard
Message 14
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| Subject: | Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "Genzlinger, Reade" <ReadeG@Cairnwood.com>
The maintenance card for the air tanks for a 52 requires testing every 5
years.
Reade Genzlinger
Cairnwood Cooperative Corporation
215.914.0370
215.790.6212 fax
readeg@cairnwood.com
-----Original Message-----
From: A. Dennis Savarese [mailto:adsavar@gte.net]
Subject: Re: Yak-List: Yak 50 Air Bottle Failure
{SPAM?} Header
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
Probably a good idea to check the date stamps and to have our tanks
periodically pressure tested as well. Thank goodness it didn't happen in a
52 with someone in the rear seat!
Dennis
----- Original Message -----
From: "Kevin Pilling" <kjpilling@btclick.com>
Subject: Yak-List: Yak 50 Air Bottle Failure
> --> Yak-List message posted by: "Kevin Pilling" <kjpilling@btclick.com>
>
> BlankAll Yaksters this is a WAKE UP CALL.
>
> After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
bottle suffered a catastrophic failure at the normal 45 bar working
pressure. The explosive force fired part of the reservoir bottle out through
the lower fuselage destroying the left lower firewall and engine mounting
and part up into the fuel tank area lodging itself partway through the
fuselage skin. Other parts passed out through the hull leaving holes as
their only witnesses. Debris destroyed the throttle linkage forcing the
engine to max power which immediately raised the tail bringing the propeller
into contact with the ground. Pilot shut down the engine with the mag
switches and aircraft came to a rest just 2 metres from the initial point
but now in a tail high nose on the ground attitude. Rescuers lowered the
aircraft into the correct attitude and pilot vacated..
> Debris damaged a parked Volvo some 30-40 feet away.
>
> The purpose of the intended flight was to carry out a formation display
over the English Channel and then to depart off slot to Rotterdam (one hour
over water transit) for a further over water display. The aircraft had
completed two, one hour transits over the North Sea just 10 days prior.
>
> I leave you to muse the implications.
>
> I have posted pictures to the Photo Share site but these will be as couple
of days being published.
>
> Ignore the obvious implications at your peril.
>
> Fly Safe
> kp
>
>
Message 15
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| Subject: | Re: Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "Doug" <rvfltd@televar.com>
Walt,
Having never seen a Yak 50 air tank, I will admit that I am just guessing
here but The Russians and the Chinese seem to been prone to not reinvent
things so I would bet that the bottle is the same as in a CJ. To prove the
assumption, I went to my 1956 Miniyak (Yak 18 / CJ5), and sure enough both
the emergency and main air bottles are the same as the CJ. Should you be
able to confirm this, I do have the tanks in stock. But before we all run
wild eyed to buy new tanks I would suggest that you first have your tank
pressure tested and checked for internal deterioration due to rust. In my
experience this will cost you less than $100.00, which is far less than the
cost of a new tank. Not all of our tanks are just waiting to blow us up, a
case in point happened this year where in a misguided pilot / mechanic type
who had no knowledge of how the air system actually functions tightened the
set screw on the pressure relief valve all the way down thus eliminating its
ability to do its job. He then fueled and flew the aircraft without a
problem, evidently never thinking to check the pressure gauge which must
have been pegged as we suspect that he had at least 3000 psi in his tank by
this time. He taxied up to the fuel dump, fueled, pushed it back, turned a
few blades and climbed into the cockpit. Planning to only return the
aircraft to the hanger he did not fasten his belt or harness. When he
touched the start button the entire air system blew! The start solenoid
exploded into three pieces, nearly every airline in the aircraft ruptured,
check valves blew in half, and the canopies were damaged. The force was
enough to blow him partially out of the cockpit onto the wing. Luckily he
was not hurt, but the aircraft was badly damaged. The point here is not
that we should not screw with things we don't understand, we all know that.
The point is that not all these tanks are lurking in the shadows just
waiting to kill us, hell this one held over 3000 psi. The CJ's and Yaks
have a very safe system when properly maintained. The problem is that
either for monetary considerations or simply lack of attention the air tanks
(like the air filters, which run at the same pressure) are often overlooked.
IMHO they should be removed and checked every 2-3 years if your in a high
humidity area and your making a lot of water. This information should be
noted in the log book. In dry areas both the Chinese and the Russians
recommend checking them every 5 years.
Always yakin,
Doug Sapp
----- Original Message -----
From: "Walt Fricke" <walterfricke@yahoo.com>
Subject: Re: Yak-List: Yak 50 Air Bottle Failure
> --> Yak-List message posted by: Walt Fricke <walterfricke@yahoo.com>
>
> Anybody know where you can get new air bottles for a Yak 50? I think they
are smaller than the 52 bottles?
>
>
> Kevin Pilling <kjpilling@btclick.com> wrote:
> --> Yak-List message posted by: "Kevin Pilling"
>
> BlankAll Yaksters this is a WAKE UP CALL.
>
> After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
bottle suffered a catastrophic failure at the normal 45 bar working
pressure. The explosive force fired part of the reservoir bottle out through
the lower fuselage destroying the left lower firewall and engine mounting
and part up into the fuel tank area lodging itself partway through the
fuselage skin. Other parts passed out through the hull leaving holes as
their only witnesses. Debris destroyed the throttle linkage forcing the
engine to max power which immediately raised the tail bringing the propeller
into contact with the ground. Pilot shut down the engine with the mag
switches and aircraft came to a rest just 2 metres from the initial point
but now in a tail high nose on the ground attitude. Rescuers lowered the
aircraft into the correct attitude and pilot vacated..
> Debris damaged a parked Volvo some 30-40 feet away.
>
> The purpose of the intended flight was to carry out a formation display
over the English Channel and then to depart off slot to Rotterdam (one hour
over water transit) for a further over water display. The aircraft had
completed two, one hour transits over the North Sea just 10 days prior.
>
> I leave you to muse the implications.
>
> I have posted pictures to the Photo Share site but these will be as couple
of days being published.
>
> Ignore the obvious implications at your peril.
>
> Fly Safe
> kp
>
>
> ---------------------------------
>
>
Message 16
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| Subject: | Panther CATS headset |
--> Yak-List message posted by: Michael Di Marco <cj6a_chinablue@yahoo.com>
Anyone have any success with the Panther system in their CJ? I've been trying
for six months and have gone through six configuration changes and a new radio
with no luck. The set will bench check fine but I'll get a squeel when using
it in the airplane. Turn down the gain to eliminate the squeel and I can't be
heard.
Mike
China Blue
---------------------------------
Message 17
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| Subject: | LOAs and Type Ratings |
--> Yak-List message posted by: Michael Di Marco <cj6a_chinablue@yahoo.com>
In reading through the pre-OSH message traffic, I saw something about converting
Letters of Authorization into type ratings. I read wrong? Do CJ/Yak owners
need to go visit their local FSDOs?
Mike
China Blue
---------------------------------
Message 18
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| Subject: | Re: Yak 50 Air Bottle Failure |
tests=ORIGINAL_MESSAGE,QUOTED_EMAIL_TEXT,REFERENCES,
USER_IN_WHITELIST
version=2.55
--> Yak-List message posted by: "Walt Lannon" <lannon@look.ca>
Thanks for sharing this Kevin, hopefully it will really be a wake up call.
Current FAA and Transport Canada regulations require a hydrostatic test and
certification of ANY pressure vessel installed in an aircraft at intervals
of no more than three years. This used to be the general industry standard
of five years but was reduced by the FAA a few years ago.
Whether this regulation is applicable to Experimental/Exhibition in the US I
don't know.
I do know that it is applicable to CJ's, Yak's and any other Special C of
A - Limited aircraft in Canada.
The Chinese manual gives the specs for internal inspection and hydrostatic
testing. They test at 75 atms. - approx. 1150 psi. Canadian testing
facilities that I have discussed this with have a problem in that it is a
non-certified pressure vessel and they cannot test to that pressure.
They can, apparently legally, test to a maximum of 1000 psi as a "low"
pressure bottle. Close enough.
Kevin's experience say's it loud and clear; whether the regulations are
applicable or not internal inspection and hydro testing of these bottles is
a no-brainer.
Walt
----- Original Message -----
From: "Kevin Pilling" <kjpilling@btclick.com>
Subject: Yak-List: Yak 50 Air Bottle Failure
> --> Yak-List message posted by: "Kevin Pilling" <kjpilling@btclick.com>
>
> BlankAll Yaksters this is a WAKE UP CALL.
>
> After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
bottle suffered a catastrophic failure at the normal 45 bar working
pressure. The explosive force fired part of the reservoir bottle out through
the lower fuselage destroying the left lower firewall and engine mounting
and part up into the fuel tank area lodging itself partway through the
fuselage skin. Other parts passed out through the hull leaving holes as
their only witnesses. Debris destroyed the throttle linkage forcing the
engine to max power which immediately raised the tail bringing the propeller
into contact with the ground. Pilot shut down the engine with the mag
switches and aircraft came to a rest just 2 metres from the initial point
but now in a tail high nose on the ground attitude. Rescuers lowered the
aircraft into the correct attitude and pilot vacated..
> Debris damaged a parked Volvo some 30-40 feet away.
>
> The purpose of the intended flight was to carry out a formation display
over the English Channel and then to depart off slot to Rotterdam (one hour
over water transit) for a further over water display. The aircraft had
completed two, one hour transits over the North Sea just 10 days prior.
>
> I leave you to muse the implications.
>
> I have posted pictures to the Photo Share site but these will be as couple
of days being published.
>
> Ignore the obvious implications at your peril.
>
> Fly Safe
> kp
>
>
Message 19
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|
| Subject: | Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "Doug" <rvfltd@televar.com>
> Walt,
> Having never seen a Yak 50 air tank, I will admit that I am just guessing
> here but The Russians and the Chinese seem to been prone to not reinvent
> things so I would bet that the bottle is the same as in a CJ. To prove
the
> assumption, I went to my 1956 Miniyak (Yak 18 / CJ5), and sure enough both
> the emergency and main air bottles are the same as the CJ. Should you be
> able to confirm this, I do have the tanks in stock. But before we all run
> wild eyed to buy new tanks I would suggest that you first have your tank
> pressure tested and checked for internal deterioration due to rust. In
my
> experience this will cost you less than $100.00, which is far less than
the
> cost of a new tank. Not all of our tanks are just waiting to blow us up,
a
> case in point happened this year where in a misguided pilot / mechanic
type
> who had no knowledge of how the air system actually functions tightened
the
> set screw on the pressure relief valve all the way down thus eliminating
its
> ability to do its job. He then fueled and flew the aircraft without a
> problem, evidently never thinking to check the pressure gauge which must
> have been pegged as we suspect that he had at least 3000 psi in his tank
by
> this time. He taxied up to the fuel dump, fueled, pushed it back, turned
a
> few blades and climbed into the cockpit. Planning to only return the
> aircraft to the hanger he did not fasten his belt or harness. When he
> touched the start button the entire air system blew! The start solenoid
> exploded into three pieces, nearly every airline in the aircraft ruptured,
> check valves blew in half, and the canopies were damaged. The force was
> enough to blow him partially out of the cockpit onto the wing. Luckily he
> was not hurt, but the aircraft was badly damaged. The point here is not
> that we should not screw with things we don't understand, we all know
that.
> The point is that not all these tanks are lurking in the shadows just
> waiting to kill us, hell this one held over 3000 psi. The CJ's and Yaks
> have a very safe system when properly maintained. The problem is that
> either for monetary considerations or simply lack of attention the air
tanks
> (like the air filters, which run at the same pressure) are often
overlooked.
> IMHO they should be removed and checked every 2-3 years if your in a high
> humidity area and your making a lot of water. This information should be
> noted in the log book. In dry areas both the Chinese and the Russians
> recommend checking them every 5 years.
>
> Always yakin,
> Doug Sapp
>
> ----- Original Message -----
> From: "Walt Fricke" <walterfricke@yahoo.com>
> To: <yak-list@matronics.com>
> Sent: Wednesday, August 27, 2003 6:35 AM
> Subject: Re: Yak-List: Yak 50 Air Bottle Failure
>
>
> > --> Yak-List message posted by: Walt Fricke <walterfricke@yahoo.com>
> >
> > Anybody know where you can get new air bottles for a Yak 50? I think
they
> are smaller than the 52 bottles?
> >
> >
> > Kevin Pilling <kjpilling@btclick.com> wrote:
> > --> Yak-List message posted by: "Kevin Pilling"
> >
> > BlankAll Yaksters this is a WAKE UP CALL.
> >
> > After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
> bottle suffered a catastrophic failure at the normal 45 bar working
> pressure. The explosive force fired part of the reservoir bottle out
through
> the lower fuselage destroying the left lower firewall and engine mounting
> and part up into the fuel tank area lodging itself partway through the
> fuselage skin. Other parts passed out through the hull leaving holes as
> their only witnesses. Debris destroyed the throttle linkage forcing the
> engine to max power which immediately raised the tail bringing the
propeller
> into contact with the ground. Pilot shut down the engine with the mag
> switches and aircraft came to a rest just 2 metres from the initial point
> but now in a tail high nose on the ground attitude. Rescuers lowered the
> aircraft into the correct attitude and pilot vacated..
> > Debris damaged a parked Volvo some 30-40 feet away.
> >
> > The purpose of the intended flight was to carry out a formation display
> over the English Channel and then to depart off slot to Rotterdam (one
hour
> over water transit) for a further over water display. The aircraft had
> completed two, one hour transits over the North Sea just 10 days prior.
> >
> > I leave you to muse the implications.
> >
> > I have posted pictures to the Photo Share site but these will be as
couple
> of days being published.
> >
> > Ignore the obvious implications at your peril.
> >
> > Fly Safe
> > kp
> >
> >
> > ---------------------------------
> >
> >
> >
> >
> >
> >
>
Message 20
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|
| Subject: | Re: Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
My L-29 has several air bottles which charge up to 150 bar (2000 PSI) as
opposed to the CJ's 40 bar. I'd hate to see what would happen if those
babies blew.
Ernie
----- Original Message -----
From: "Doug" <rvfltd@televar.com>
Subject: Re: Yak-List: Yak 50 Air Bottle Failure
> --> Yak-List message posted by: "Doug" <rvfltd@televar.com>
>
> Walt,
> Having never seen a Yak 50 air tank, I will admit that I am just guessing
> here but The Russians and the Chinese seem to been prone to not reinvent
> things so I would bet that the bottle is the same as in a CJ. To prove
the
> assumption, I went to my 1956 Miniyak (Yak 18 / CJ5), and sure enough both
> the emergency and main air bottles are the same as the CJ. Should you be
> able to confirm this, I do have the tanks in stock. But before we all run
> wild eyed to buy new tanks I would suggest that you first have your tank
> pressure tested and checked for internal deterioration due to rust. In
my
> experience this will cost you less than $100.00, which is far less than
the
> cost of a new tank. Not all of our tanks are just waiting to blow us up,
a
> case in point happened this year where in a misguided pilot / mechanic
type
> who had no knowledge of how the air system actually functions tightened
the
> set screw on the pressure relief valve all the way down thus eliminating
its
> ability to do its job. He then fueled and flew the aircraft without a
> problem, evidently never thinking to check the pressure gauge which must
> have been pegged as we suspect that he had at least 3000 psi in his tank
by
> this time. He taxied up to the fuel dump, fueled, pushed it back, turned
a
> few blades and climbed into the cockpit. Planning to only return the
> aircraft to the hanger he did not fasten his belt or harness. When he
> touched the start button the entire air system blew! The start solenoid
> exploded into three pieces, nearly every airline in the aircraft ruptured,
> check valves blew in half, and the canopies were damaged. The force was
> enough to blow him partially out of the cockpit onto the wing. Luckily he
> was not hurt, but the aircraft was badly damaged. The point here is not
> that we should not screw with things we don't understand, we all know
that.
> The point is that not all these tanks are lurking in the shadows just
> waiting to kill us, hell this one held over 3000 psi. The CJ's and Yaks
> have a very safe system when properly maintained. The problem is that
> either for monetary considerations or simply lack of attention the air
tanks
> (like the air filters, which run at the same pressure) are often
overlooked.
> IMHO they should be removed and checked every 2-3 years if your in a high
> humidity area and your making a lot of water. This information should be
> noted in the log book. In dry areas both the Chinese and the Russians
> recommend checking them every 5 years.
>
> Always yakin,
> Doug Sapp
>
> ----- Original Message -----
> From: "Walt Fricke" <walterfricke@yahoo.com>
> To: <yak-list@matronics.com>
> Subject: Re: Yak-List: Yak 50 Air Bottle Failure
>
>
> > --> Yak-List message posted by: Walt Fricke <walterfricke@yahoo.com>
> >
> > Anybody know where you can get new air bottles for a Yak 50? I think
they
> are smaller than the 52 bottles?
> >
> >
> > Kevin Pilling <kjpilling@btclick.com> wrote:
> > --> Yak-List message posted by: "Kevin Pilling"
> >
> > BlankAll Yaksters this is a WAKE UP CALL.
> >
> > After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
> bottle suffered a catastrophic failure at the normal 45 bar working
> pressure. The explosive force fired part of the reservoir bottle out
through
> the lower fuselage destroying the left lower firewall and engine mounting
> and part up into the fuel tank area lodging itself partway through the
> fuselage skin. Other parts passed out through the hull leaving holes as
> their only witnesses. Debris destroyed the throttle linkage forcing the
> engine to max power which immediately raised the tail bringing the
propeller
> into contact with the ground. Pilot shut down the engine with the mag
> switches and aircraft came to a rest just 2 metres from the initial point
> but now in a tail high nose on the ground attitude. Rescuers lowered the
> aircraft into the correct attitude and pilot vacated..
> > Debris damaged a parked Volvo some 30-40 feet away.
> >
> > The purpose of the intended flight was to carry out a formation display
> over the English Channel and then to depart off slot to Rotterdam (one
hour
> over water transit) for a further over water display. The aircraft had
> completed two, one hour transits over the North Sea just 10 days prior.
> >
> > I leave you to muse the implications.
> >
> > I have posted pictures to the Photo Share site but these will be as
couple
> of days being published.
> >
> > Ignore the obvious implications at your peril.
> >
> > Fly Safe
> > kp
> >
> >
> > ---------------------------------
> >
> >
>
>
Message 21
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|
| Subject: | Re: LOAs and Type Ratings |
--> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
LOA's are only required for non-standard certificated aircraft of over 800
HP or Turbojet aircraft. You dont need an LOA for a CJ or Yak. The ETR's
(Experimental Type Ratings) are replacing LOA's which are administered by
FSDO's whereas ETR's are administered out of OK, and dont expire.
Ernie
----- Original Message -----
From: "Michael Di Marco" <cj6a_chinablue@yahoo.com>
Subject: Yak-List: LOAs and Type Ratings
> --> Yak-List message posted by: Michael Di Marco
<cj6a_chinablue@yahoo.com>
>
> In reading through the pre-OSH message traffic, I saw something about
converting Letters of Authorization into type ratings. I read wrong? Do
CJ/Yak owners need to go visit their local FSDOs?
>
> Mike
> China Blue
>
>
> ---------------------------------
>
>
Message 22
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|
| Subject: | Rangerette Richard |
--> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
Skipsly@aol.com wrote:
And for those of you heathens out there, he pronounces it "ree-shard."
>>(as I unzip my mauve Kermel flightsuit about three inches to properly
>>display my ascot), that I will never have to buy my own fruity boat drinks
>>with the little parasols again.
>>
>
> Mauve? Oh, Sparky! Could you TRY to be a little more butch? I prefer "salmon"
> myself, like those desert thngies the boys wear nowadays.
You know, that IS a good color for me. Well I have been looking for just the right
guy for the "decorating" part of my team. With your sense of color and style
(that helmet you wear is simply marv) you are clearly the front runner.
--
Brian Lloyd 6501 Red Hook Plaza, Suite 201
brian@lloyd.com St. Thomas, VI 00802
+1.340.998.9447 - voice +1.360.838.9669 - fax
GMT-4
Message 23
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|
| Subject: | Re: Yak 50 Air Bottle Failure |
--> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
Doug wrote:
> hell this one held over 3000 psi.
I don't think that the little one-stage compressor can get anywhere near that high.
In order to do so it would need a compression ratio of 200:1, darned near
impossible to do with only one stage. If it had that high a compression ratio
any oil in the compressor would likely combust (think diesel engine here).
--
Brian Lloyd 6501 Red Hook Plaza, Suite 201
brian@lloyd.com St. Thomas, VI 00802
+1.340.998.9447 - voice +1.360.838.9669 - fax
GMT-4
Message 24
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|
| Subject: | Re: Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "Jon Boede" <jon@email.net>
You probably wouldn't, over.
Jon :-)
> --> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
>
> My L-29 has several air bottles which charge up to 150 bar (2000 PSI) as
> opposed to the CJ's 40 bar. I'd hate to see what would happen if those
> babies blew.
>
> Ernie
> ----- Original Message -----
> From: "Doug" <rvfltd@televar.com>
> To: "Yak list" <yak-list@matronics.com>
> Subject: Re: Yak-List: Yak 50 Air Bottle Failure
>
>
>> --> Yak-List message posted by: "Doug" <rvfltd@televar.com>
>>
>> Walt,
>> Having never seen a Yak 50 air tank, I will admit that I am just
>> guessing here but The Russians and the Chinese seem to been prone to
>> not reinvent things so I would bet that the bottle is the same as in a
>> CJ. To prove
> the
>> assumption, I went to my 1956 Miniyak (Yak 18 / CJ5), and sure enough
>> both the emergency and main air bottles are the same as the CJ.
>> Should you be able to confirm this, I do have the tanks in stock. But
>> before we all run wild eyed to buy new tanks I would suggest that you
>> first have your tank pressure tested and checked for internal
>> deterioration due to rust. In
> my
>> experience this will cost you less than $100.00, which is far less
>> than
> the
>> cost of a new tank. Not all of our tanks are just waiting to blow us
>> up,
> a
>> case in point happened this year where in a misguided pilot / mechanic
> type
>> who had no knowledge of how the air system actually functions
>> tightened
> the
>> set screw on the pressure relief valve all the way down thus
>> eliminating
> its
>> ability to do its job. He then fueled and flew the aircraft without a
>> problem, evidently never thinking to check the pressure gauge which
>> must have been pegged as we suspect that he had at least 3000 psi in
>> his tank
> by
>> this time. He taxied up to the fuel dump, fueled, pushed it back,
>> turned
> a
>> few blades and climbed into the cockpit. Planning to only return the
>> aircraft to the hanger he did not fasten his belt or harness. When
>> he touched the start button the entire air system blew! The start
>> solenoid exploded into three pieces, nearly every airline in the
>> aircraft ruptured, check valves blew in half, and the canopies were
>> damaged. The force was enough to blow him partially out of the
>> cockpit onto the wing. Luckily he was not hurt, but the aircraft was
>> badly damaged. The point here is not that we should not screw with
>> things we don't understand, we all know
> that.
>> The point is that not all these tanks are lurking in the shadows just
>> waiting to kill us, hell this one held over 3000 psi. The CJ's and
>> Yaks have a very safe system when properly maintained. The problem is
>> that either for monetary considerations or simply lack of attention
>> the air
> tanks
>> (like the air filters, which run at the same pressure) are often
> overlooked.
>> IMHO they should be removed and checked every 2-3 years if your in a
>> high humidity area and your making a lot of water. This information
>> should be noted in the log book. In dry areas both the Chinese and
>> the Russians recommend checking them every 5 years.
>>
>> Always yakin,
>> Doug Sapp
>>
>> ----- Original Message -----
>> From: "Walt Fricke" <walterfricke@yahoo.com>
>> To: <yak-list@matronics.com>
>> Subject: Re: Yak-List: Yak 50 Air Bottle Failure
>>
>>
>> > --> Yak-List message posted by: Walt Fricke <walterfricke@yahoo.com>
>> >
>> > Anybody know where you can get new air bottles for a Yak 50? I
>> think
> they
>> are smaller than the 52 bottles?
>> >
>> >
>> > Kevin Pilling <kjpilling@btclick.com> wrote:
>> > --> Yak-List message posted by: "Kevin Pilling"
>> >
>> > BlankAll Yaksters this is a WAKE UP CALL.
>> >
>> > After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
>> bottle suffered a catastrophic failure at the normal 45 bar working
>> pressure. The explosive force fired part of the reservoir bottle out
> through
>> the lower fuselage destroying the left lower firewall and engine
>> mounting and part up into the fuel tank area lodging itself partway
>> through the fuselage skin. Other parts passed out through the hull
>> leaving holes as their only witnesses. Debris destroyed the throttle
>> linkage forcing the engine to max power which immediately raised the
>> tail bringing the
> propeller
>> into contact with the ground. Pilot shut down the engine with the mag
>> switches and aircraft came to a rest just 2 metres from the initial
>> point but now in a tail high nose on the ground attitude. Rescuers
>> lowered the aircraft into the correct attitude and pilot vacated..
>> > Debris damaged a parked Volvo some 30-40 feet away.
>> >
>> > The purpose of the intended flight was to carry out a formation
>> display
>> over the English Channel and then to depart off slot to Rotterdam (one
> hour
>> over water transit) for a further over water display. The aircraft had
>> completed two, one hour transits over the North Sea just 10 days
>> prior.
>> >
>> > I leave you to muse the implications.
>> >
>> > I have posted pictures to the Photo Share site but these will be as
> couple
>> of days being published.
>> >
>> > Ignore the obvious implications at your peril.
>> >
>> > Fly Safe
>> > kp
>> >
>> >
>> > ---------------------------------
>> >
>> >
>>
>>
>
>
Message 25
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|
| Subject: | Re: Panther CATS headset |
--> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
Michael Di Marco wrote:
> Anyone have any success with the Panther system in their CJ? I've
> been trying for six months and have gone through six configuration
> changes and a new radio with no luck. The set will bench check fine
> but I'll get a squeel when using it in the airplane. Turn down the
> gain to eliminate the squeel and I can't be heard.
This is probably an RF feedback problem. Fixes are:
1. make sure you are using shielded wire for the microphone jacks;
2. put ferrite beads on the microphone jack cables;
3. make sure that the coax from radio to antenna is intact all the way from one
end to the other;
4. move the transmit antenna to a different location on the airplane.
--
Brian Lloyd 6501 Red Hook Plaza, Suite 201
brian@lloyd.com St. Thomas, VI 00802
+1.340.998.9447 - voice +1.360.838.9669 - fax
GMT-4
Message 26
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|
| Subject: | Re: Panther CATS headset |
--> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
Michael Di Marco wrote:
> --> Yak-List message posted by: Michael Di Marco
> <cj6a_chinablue@yahoo.com>
>
> but I'll get a squeel when using it in the airplane. Turn down the
> gain to eliminate the squeel and I can't be heard.
I forgot to suggest adding bypass capacitors at the mic jack.
--
Brian Lloyd 6501 Red Hook Plaza, Suite 201
brian@lloyd.com St. Thomas, VI 00802
+1.340.998.9447 - voice +1.360.838.9669 - fax
GMT-4
Message 27
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| Subject: | Re: Panther CATS headset |
--> Yak-List message posted by: Michael Di Marco <cj6a_chinablue@yahoo.com>
I suspect you're right in one or more of those items. I'll have to decide what's
more important. All that work or flying with a standard headset.
Thanks,
Mike
China Blue
Brian Lloyd <brian@lloyd.com> wrote:
--> Yak-List message posted by: Brian Lloyd
Michael Di Marco wrote:
> Anyone have any success with the Panther system in their CJ? I've
> been trying for six months and have gone through six configuration
> changes and a new radio with no luck. The set will bench check fine
> but I'll get a squeel when using it in the airplane. Turn down the
> gain to eliminate the squeel and I can't be heard.
This is probably an RF feedback problem. Fixes are:
1. make sure you are using shielded wire for the microphone jacks;
2. put ferrite beads on the microphone jack cables;
3. make sure that the coax from radio to antenna is intact all the way from one
end to the other;
4. move the transmit antenna to a different location on the airplane.
--
Brian Lloyd 6501 Red Hook Plaza, Suite 201
brian@lloyd.com St. Thomas, VI 00802
+1.340.998.9447 - voice +1.360.838.9669 - fax
GMT-4
---------------------------------
Message 28
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| Subject: | Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "Coffey, John" <john.coffey@attws.com>
Doug,
Where does one go in the Northwest to have one of these airbottles
tested for $100?
-----Original Message-----
From: Doug [mailto:rvfltd@televar.com]
Subject: Re: Yak-List: Yak 50 Air Bottle Failure
--> Yak-List message posted by: "Doug" <rvfltd@televar.com>
Walt,
Having never seen a Yak 50 air tank, I will admit that I am just
guessing
here but The Russians and the Chinese seem to been prone to not reinvent
things so I would bet that the bottle is the same as in a CJ. To prove
the
assumption, I went to my 1956 Miniyak (Yak 18 / CJ5), and sure enough
both
the emergency and main air bottles are the same as the CJ. Should you
be
able to confirm this, I do have the tanks in stock. But before we all
run
wild eyed to buy new tanks I would suggest that you first have your tank
pressure tested and checked for internal deterioration due to rust. In
my
experience this will cost you less than $100.00, which is far less than
the
cost of a new tank. Not all of our tanks are just waiting to blow us
up, a
case in point happened this year where in a misguided pilot / mechanic
type
who had no knowledge of how the air system actually functions tightened
the
set screw on the pressure relief valve all the way down thus eliminating
its
ability to do its job. He then fueled and flew the aircraft without a
problem, evidently never thinking to check the pressure gauge which must
have been pegged as we suspect that he had at least 3000 psi in his tank
by
this time. He taxied up to the fuel dump, fueled, pushed it back,
turned a
few blades and climbed into the cockpit. Planning to only return the
aircraft to the hanger he did not fasten his belt or harness. When he
touched the start button the entire air system blew! The start solenoid
exploded into three pieces, nearly every airline in the aircraft
ruptured,
check valves blew in half, and the canopies were damaged. The force was
enough to blow him partially out of the cockpit onto the wing. Luckily
he
was not hurt, but the aircraft was badly damaged. The point here is not
that we should not screw with things we don't understand, we all know
that.
The point is that not all these tanks are lurking in the shadows just
waiting to kill us, hell this one held over 3000 psi. The CJ's and Yaks
have a very safe system when properly maintained. The problem is that
either for monetary considerations or simply lack of attention the air
tanks
(like the air filters, which run at the same pressure) are often
overlooked.
IMHO they should be removed and checked every 2-3 years if your in a
high
humidity area and your making a lot of water. This information should
be
noted in the log book. In dry areas both the Chinese and the Russians
recommend checking them every 5 years.
Always yakin,
Doug Sapp
----- Original Message -----
From: "Walt Fricke" <walterfricke@yahoo.com>
Subject: Re: Yak-List: Yak 50 Air Bottle Failure
> --> Yak-List message posted by: Walt Fricke <walterfricke@yahoo.com>
>
> Anybody know where you can get new air bottles for a Yak 50? I think
they
are smaller than the 52 bottles?
>
>
> Kevin Pilling <kjpilling@btclick.com> wrote:
> --> Yak-List message posted by: "Kevin Pilling"
>
> BlankAll Yaksters this is a WAKE UP CALL.
>
> After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
bottle suffered a catastrophic failure at the normal 45 bar working
pressure. The explosive force fired part of the reservoir bottle out
through
the lower fuselage destroying the left lower firewall and engine
mounting
and part up into the fuel tank area lodging itself partway through the
fuselage skin. Other parts passed out through the hull leaving holes as
their only witnesses. Debris destroyed the throttle linkage forcing the
engine to max power which immediately raised the tail bringing the
propeller
into contact with the ground. Pilot shut down the engine with the mag
switches and aircraft came to a rest just 2 metres from the initial
point
but now in a tail high nose on the ground attitude. Rescuers lowered the
aircraft into the correct attitude and pilot vacated..
> Debris damaged a parked Volvo some 30-40 feet away.
>
> The purpose of the intended flight was to carry out a formation
display
over the English Channel and then to depart off slot to Rotterdam (one
hour
over water transit) for a further over water display. The aircraft had
completed two, one hour transits over the North Sea just 10 days prior.
>
> I leave you to muse the implications.
>
> I have posted pictures to the Photo Share site but these will be as
couple
of days being published.
>
> Ignore the obvious implications at your peril.
>
> Fly Safe
> kp
>
>
> ---------------------------------
>
>
Message 29
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| From: | "Jorgen Nielsen @ Mweb" <jorgen.nielsen@mweb.co.za> |
--> Yak-List message posted by: "Jorgen Nielsen @ Mweb" <jorgen.nielsen@mweb.co.za>
Hi Deon
Thats great offer, will save your details if no luck by then. Spare prop
would be good.
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of Deon
Esterhuizen
Subject: Yak-List: SA problems
--> Yak-List message posted by: "Deon Esterhuizen"
<desterhuizen@hyphos360.com>
Jorgen
I'm an ex South African living in Tampa Florida. I will be coming back
for a visit next March , if you can wait that long and you are not
buying an engine, I can bring stuff with me. You can contact me off list
if you want.
Deon Esterhuizen
Yak52
N192YK
-----Original Message-----
From: Jorgen Nielsen [mailto:Jorgen.Nielsen@mweb.co.za]
Subject: RE: Yak-List: The YPA web site
--> Yak-List message posted by: "Jorgen Nielsen"
<Jorgen.Nielsen@mweb.co.za>
Doug is correct. Pay pal do support some international destinations,
but
not South Africa.
Maybe they figure the wild animals may eat the fed-ex man? Or that we
don't
have fuel here for the cargo plane's return trip?
Seriously though, I have bought many items via the net from the US and
other
places. No problems. Any alternatives would be great.
Jorgen
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of Doug
Subject: Re: Yak-List: The YPA web site
--> Yak-List message posted by: "Doug" <rvfltd@televar.com>
Drew,
Not true, some folks outside the US can pay via pay pal. My yak guys in
AU
and NZ sometimes pay in this manner but it is rather expensive for both
parties. You can go to the pay pal web site to get the list of
countries.
Always yakin,
Doug
Message 30
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| Subject: | Re: Panther CATS headset |
--> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
Michael Di Marco wrote:
> --> Yak-List message posted by: Michael Di Marco
> <cj6a_chinablue@yahoo.com>
>
> I suspect you're right in one or more of those items. I'll have to
> decide what's more important. All that work or flying with a
> standard headset.
Actually, it should have been wired with shielded cable to start with and the mic
jack should be insulated from the airframe. Moving the antenna is probably
the next easiest thing to do. If you have the problem now with the CATS headset
you are liable to have the problem with other headsets as well although it
will probably vary from manufacturer to manufacturer. Solving the problem now
will probably solve the problem for all headsets.
--
Brian Lloyd 6501 Red Hook Plaza, Suite 201
brian@lloyd.com St. Thomas, VI 00802
+1.340.998.9447 - voice +1.360.838.9669 - fax
GMT-4
Message 31
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|
| Subject: | More in support of "Red Star" |
--> Yak-List message posted by: ByronMFox@aol.com
Take a look at the August issue of Pacific Flyer. There's an interesting
article about a newly formed San Diego based formation demo team, the Thunder
Delphins.
http://www.landings.com/evird.acgi$pass*56713522!_h-www.landings.com/_landings
/pacflyer/aug6-2003/An-34-thunder-delfin.html
Many of you know these T-34 guys from TRARON gatherings; Doug Medore, Cas
Casillis, Doug Gilliss and Don Goodin. Now that they own and perform in L-29s,
they should be Red Star members. Moreover, Don Goodin in the founder of the
Missing Man Foundation, an activity in which I would love to participate. We
must not allow folks like these to stray.
...Blitz
Byron M. Fox
80 Milland Drive
Mill Valley, CA 94941
Home 415-380-0907
Cell 415-307-2405
Fax 415-380-0917
Message 32
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|
| Subject: | Yak 50 Air Bottle Failure |
--> Yak-List message posted by: <johnhilterman1@cox.net>
Any ideas on who would perform these types of hydro testing? I doubt your
local SCUBA shop would even touch these bottles. As an OBTW, I just flew my
Yak-50 home from Vermont to Oklahoma City where at the half way point my
emergency side air bottle was being charged up to +70 ATM's. Pretty scary,
er stupid on my part in retrospect after reading this mishap report on
Kevin's -50.
John Hilterman
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of A. Dennis
Savarese
Subject: Re: Yak-List: Yak 50 Air Bottle Failure
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
Probably a good idea to check the date stamps and to have our tanks
periodically pressure tested as well. Thank goodness it didn't happen in a
52 with someone in the rear seat!
Dennis
----- Original Message -----
From: "Kevin Pilling" <kjpilling@btclick.com>
Subject: Yak-List: Yak 50 Air Bottle Failure
> --> Yak-List message posted by: "Kevin Pilling" <kjpilling@btclick.com>
>
> BlankAll Yaksters this is a WAKE UP CALL.
>
> After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
bottle suffered a catastrophic failure at the normal 45 bar working
pressure. The explosive force fired part of the reservoir bottle out through
the lower fuselage destroying the left lower firewall and engine mounting
and part up into the fuel tank area lodging itself partway through the
fuselage skin. Other parts passed out through the hull leaving holes as
their only witnesses. Debris destroyed the throttle linkage forcing the
engine to max power which immediately raised the tail bringing the propeller
into contact with the ground. Pilot shut down the engine with the mag
switches and aircraft came to a rest just 2 metres from the initial point
but now in a tail high nose on the ground attitude. Rescuers lowered the
aircraft into the correct attitude and pilot vacated..
> Debris damaged a parked Volvo some 30-40 feet away.
>
> The purpose of the intended flight was to carry out a formation display
over the English Channel and then to depart off slot to Rotterdam (one hour
over water transit) for a further over water display. The aircraft had
completed two, one hour transits over the North Sea just 10 days prior.
>
> I leave you to muse the implications.
>
> I have posted pictures to the Photo Share site but these will be as couple
of days being published.
>
> Ignore the obvious implications at your peril.
>
> Fly Safe
> kp
>
>
Message 33
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|
| Subject: | Re: More in support of 'Red Star' |
--> Yak-List message posted by: "Jon Boede" <jon@email.net>
This is sort-of more of a Red Star thing than a Yak thing... but does the
idea of private jet teams make anybody else kinda twitchy, too?
I mean, the Thunderbirds and the Blue Angels have unlimited budgets for
fuel (training) and maintenance, and *they* don't have perfect safety
records. And it's a very high profile thing when something goes wrong.
Jon
> --> Yak-List message posted by: ByronMFox@aol.com
>
> Take a look at the August issue of Pacific Flyer. There's an
> interesting article about a newly formed San Diego based formation demo
> team, the Thunder Delphins.
>
> http://www.landings.com/evird.acgi$pass*56713522!_h-www.landings.com/_landings/pacflyer/aug6-2003/An-34-thunder-delfin.html
>
> Many of you know these T-34 guys from TRARON gatherings; Doug Medore,
> Cas Casillis, Doug Gilliss and Don Goodin. Now that they own and
> perform in L-29s, they should be Red Star members. Moreover, Don
> Goodin in the founder of the Missing Man Foundation, an activity in
> which I would love to participate. We must not allow folks like these
> to stray.
>
> ...Blitz
>
> Byron M. Fox
> 80 Milland Drive
> Mill Valley, CA 94941
> Home 415-380-0907
> Cell 415-307-2405
> Fax 415-380-0917
Message 34
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|
| Subject: | Yak 50 Air Bottle Failure |
--> Yak-List message posted by: <johnhilterman1@cox.net>
The Yak-50 air system uses two bottles. The smaller one of the two is the
emergency system. Both bottles are charged by the compressor unlike the -52
which only charges the main system while the emergency side must be charged
via an external supply.
John Hilterman
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of Doug
Subject: Re: Yak-List: Yak 50 Air Bottle Failure
--> Yak-List message posted by: "Doug" <rvfltd@televar.com>
Walt,
Having never seen a Yak 50 air tank, I will admit that I am just guessing
here but The Russians and the Chinese seem to been prone to not reinvent
things so I would bet that the bottle is the same as in a CJ. To prove the
assumption, I went to my 1956 Miniyak (Yak 18 / CJ5), and sure enough both
the emergency and main air bottles are the same as the CJ. Should you be
able to confirm this, I do have the tanks in stock. But before we all run
wild eyed to buy new tanks I would suggest that you first have your tank
pressure tested and checked for internal deterioration due to rust. In my
experience this will cost you less than $100.00, which is far less than the
cost of a new tank. Not all of our tanks are just waiting to blow us up, a
case in point happened this year where in a misguided pilot / mechanic type
who had no knowledge of how the air system actually functions tightened the
set screw on the pressure relief valve all the way down thus eliminating its
ability to do its job. He then fueled and flew the aircraft without a
problem, evidently never thinking to check the pressure gauge which must
have been pegged as we suspect that he had at least 3000 psi in his tank by
this time. He taxied up to the fuel dump, fueled, pushed it back, turned a
few blades and climbed into the cockpit. Planning to only return the
aircraft to the hanger he did not fasten his belt or harness. When he
touched the start button the entire air system blew! The start solenoid
exploded into three pieces, nearly every airline in the aircraft ruptured,
check valves blew in half, and the canopies were damaged. The force was
enough to blow him partially out of the cockpit onto the wing. Luckily he
was not hurt, but the aircraft was badly damaged. The point here is not
that we should not screw with things we don't understand, we all know that.
The point is that not all these tanks are lurking in the shadows just
waiting to kill us, hell this one held over 3000 psi. The CJ's and Yaks
have a very safe system when properly maintained. The problem is that
either for monetary considerations or simply lack of attention the air tanks
(like the air filters, which run at the same pressure) are often overlooked.
IMHO they should be removed and checked every 2-3 years if your in a high
humidity area and your making a lot of water. This information should be
noted in the log book. In dry areas both the Chinese and the Russians
recommend checking them every 5 years.
Always yakin,
Doug Sapp
----- Original Message -----
From: "Walt Fricke" <walterfricke@yahoo.com>
Subject: Re: Yak-List: Yak 50 Air Bottle Failure
> --> Yak-List message posted by: Walt Fricke <walterfricke@yahoo.com>
>
> Anybody know where you can get new air bottles for a Yak 50? I think they
are smaller than the 52 bottles?
>
>
> Kevin Pilling <kjpilling@btclick.com> wrote:
> --> Yak-List message posted by: "Kevin Pilling"
>
> BlankAll Yaksters this is a WAKE UP CALL.
>
> After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
bottle suffered a catastrophic failure at the normal 45 bar working
pressure. The explosive force fired part of the reservoir bottle out through
the lower fuselage destroying the left lower firewall and engine mounting
and part up into the fuel tank area lodging itself partway through the
fuselage skin. Other parts passed out through the hull leaving holes as
their only witnesses. Debris destroyed the throttle linkage forcing the
engine to max power which immediately raised the tail bringing the propeller
into contact with the ground. Pilot shut down the engine with the mag
switches and aircraft came to a rest just 2 metres from the initial point
but now in a tail high nose on the ground attitude. Rescuers lowered the
aircraft into the correct attitude and pilot vacated..
> Debris damaged a parked Volvo some 30-40 feet away.
>
> The purpose of the intended flight was to carry out a formation display
over the English Channel and then to depart off slot to Rotterdam (one hour
over water transit) for a further over water display. The aircraft had
completed two, one hour transits over the North Sea just 10 days prior.
>
> I leave you to muse the implications.
>
> I have posted pictures to the Photo Share site but these will be as couple
of days being published.
>
> Ignore the obvious implications at your peril.
>
> Fly Safe
> kp
>
>
> ---------------------------------
>
>
Message 35
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|
| Subject: | Re: Panther CATS headset |
--> Yak-List message posted by: Jim Ivey <jim@jimivey.com>
Also, I have read mixed reports on the CATS headsets. You may well try
some regular aviation headsets (two different kinds at least) to make
sure the CATS isn't the real root cause of your problems.
Jim
Brian Lloyd wrote:
>--> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
>
>Michael Di Marco wrote:
>
>
>>--> Yak-List message posted by: Michael Di Marco
>><cj6a_chinablue@yahoo.com>
>>
>>I suspect you're right in one or more of those items. I'll have to
>>decide what's more important. All that work or flying with a
>>standard headset.
>>
>>
>
>Actually, it should have been wired with shielded cable to start with and the
mic jack should be insulated from the airframe. Moving the antenna is probably
the next easiest thing to do. If you have the problem now with the CATS headset
you are liable to have the problem with other headsets as well although it
will probably vary from manufacturer to manufacturer. Solving the problem now
will probably solve the problem for all headsets.
>
>
>
Message 36
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|
| Subject: | Re: More in support of 'Red Star' |
--> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
Jon Boede wrote:
> --> Yak-List message posted by: "Jon Boede" <jon@email.net>
>
> This is sort-of more of a Red Star thing than a Yak thing... but does the
> idea of private jet teams make anybody else kinda twitchy, too?
No, I think it is great! More power to them!
> I mean, the Thunderbirds and the Blue Angels have unlimited budgets for
> fuel (training) and maintenance, and *they* don't have perfect safety
> records. And it's a very high profile thing when something goes wrong.
So, are you implying that we should somehow stop them from doing what they want
to do? Who should stop them? The FAA? They are certainly tasked with aviation
safety. But that is a slippery slope. Ultimate safety comes from no airplanes
flying. Think about it.
--
Brian Lloyd 6501 Red Hook Plaza, Suite 201
brian@lloyd.com St. Thomas, VI 00802
+1.340.998.9447 - voice +1.360.838.9669 - fax
GMT-4
Message 37
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|
| Subject: | Re: Yak 50 Air Bottle Failure |
--> Yak-List message posted by: ron wasson <ronwasson@mindspring.com>
Plumbing a cable to the snot valve knob is a good backup. You can vent the
pump at will. Takeoff with the valve closed till the system just reaches max
and vents then open the valve. If the single pressure relief valve sticks
and you don't catch it fast there could be a major problem. The snot bottle
being open stops that and prevents more water getting in to the system. If
you forget to close it for landing you already have 50 in the bottle. The
air system itself is not changed at all.
Ron
Message 38
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| Subject: | Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "Frank Haertlein" <yak52driver@earthlink.net>
Kevin, et all;
It is for this very reason that I had my bottles hydrostatically
pressure tested. There's an outfit near LAX that has all the fittings to
do the testing. They've done a lot of bottles from MIG's, YAK's and
other former soviet union aircraft. You just need to tell them what the
normal operating pressure is and they will know what test pressure to
take the bottle to. They give you a nice printout of the elongation that
takes place as they pressurize the bottle and from this are able to tell
if the bottle is beyond service limits. If you search the archives you
should find my post about the subject with addresses and phone numbers.
Frank (Houndog)
N9110M
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Kevin Pilling
Subject: Yak-List: Yak 50 Air Bottle Failure
--> Yak-List message posted by: "Kevin Pilling" <kjpilling@btclick.com>
BlankAll Yaksters this is a WAKE UP CALL.
After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
bottle suffered a catastrophic failure at the normal 45 bar working
pressure. The explosive force fired part of the reservoir bottle out
through the lower fuselage destroying the left lower firewall and engine
mounting and part up into the fuel tank area lodging itself partway
through the fuselage skin. Other parts passed out through the hull
leaving holes as their only witnesses. Debris destroyed the throttle
linkage forcing the engine to max power which immediately raised the
tail bringing the propeller into contact with the ground. Pilot shut
down the engine with the mag switches and aircraft came to a rest just 2
metres from the initial point but now in a tail high nose on the ground
attitude. Rescuers lowered the aircraft into the correct attitude and
pilot vacated.. Debris damaged a parked Volvo some 30-40 feet away.
The purpose of the intended flight was to carry out a formation display
over the English Channel and then to depart off slot to Rotterdam (one
hour over water transit) for a further over water display. The aircraft
had completed two, one hour transits over the North Sea just 10 days
prior.
I leave you to muse the implications.
I have posted pictures to the Photo Share site but these will be as
couple of days being published.
Ignore the obvious implications at your peril.
Fly Safe
kp
direct advertising on the Matronics Forums.
Message 39
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| Subject: | Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "Frank Haertlein" <yak52driver@earthlink.net>
Dennis;
I heard the seats in the 52 are made of titanium. Was told to try and
drill them if I don't believe it! I would think that this would give
some measure of protection to the GIB.
Frank
N9110M
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of A. Dennis
Savarese
Subject: Re: Yak-List: Yak 50 Air Bottle Failure
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
Probably a good idea to check the date stamps and to have our tanks
periodically pressure tested as well. Thank goodness it didn't happen
in a 52 with someone in the rear seat! Dennis
----- Original Message -----
From: "Kevin Pilling" <kjpilling@btclick.com>
Subject: Yak-List: Yak 50 Air Bottle Failure
> --> Yak-List message posted by: "Kevin Pilling"
> --> <kjpilling@btclick.com>
>
> BlankAll Yaksters this is a WAKE UP CALL.
>
> After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
bottle suffered a catastrophic failure at the normal 45 bar working
pressure. The explosive force fired part of the reservoir bottle out
through the lower fuselage destroying the left lower firewall and engine
mounting and part up into the fuel tank area lodging itself partway
through the fuselage skin. Other parts passed out through the hull
leaving holes as their only witnesses. Debris destroyed the throttle
linkage forcing the engine to max power which immediately raised the
tail bringing the propeller into contact with the ground. Pilot shut
down the engine with the mag switches and aircraft came to a rest just 2
metres from the initial point but now in a tail high nose on the ground
attitude. Rescuers lowered the aircraft into the correct attitude and
pilot vacated..
> Debris damaged a parked Volvo some 30-40 feet away.
>
> The purpose of the intended flight was to carry out a formation
> display
over the English Channel and then to depart off slot to Rotterdam (one
hour over water transit) for a further over water display. The aircraft
had completed two, one hour transits over the North Sea just 10 days
prior.
>
> I leave you to muse the implications.
>
> I have posted pictures to the Photo Share site but these will be as
> couple
of days being published.
>
> Ignore the obvious implications at your peril.
>
> Fly Safe
> kp
>
>
direct advertising on the Matronics Forums.
Message 40
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| Subject: | Re: Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
But not the pneumatic lines running down the right and left side of the
airframe.
Dennis
----- Original Message -----
From: "Frank Haertlein" <yak52driver@earthlink.net>
Subject: RE: Yak-List: Yak 50 Air Bottle Failure
> --> Yak-List message posted by: "Frank Haertlein"
<yak52driver@earthlink.net>
>
> Dennis;
> I heard the seats in the 52 are made of titanium. Was told to try and
> drill them if I don't believe it! I would think that this would give
> some measure of protection to the GIB.
>
> Frank
> N9110M
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of A. Dennis
> Savarese
> To: yak-list@matronics.com
> Subject: Re: Yak-List: Yak 50 Air Bottle Failure
>
>
> --> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
>
> Probably a good idea to check the date stamps and to have our tanks
> periodically pressure tested as well. Thank goodness it didn't happen
> in a 52 with someone in the rear seat! Dennis
>
> ----- Original Message -----
> From: "Kevin Pilling" <kjpilling@btclick.com>
> To: "yak-list@matronics. com" <yak-list@matronics.com>
> Subject: Yak-List: Yak 50 Air Bottle Failure
>
>
> > --> Yak-List message posted by: "Kevin Pilling"
> > --> <kjpilling@btclick.com>
> >
> > BlankAll Yaksters this is a WAKE UP CALL.
> >
> > After a 7-10 minute engine warm up in my 1985 Yak 50 the service air
> bottle suffered a catastrophic failure at the normal 45 bar working
> pressure. The explosive force fired part of the reservoir bottle out
> through the lower fuselage destroying the left lower firewall and engine
> mounting and part up into the fuel tank area lodging itself partway
> through the fuselage skin. Other parts passed out through the hull
> leaving holes as their only witnesses. Debris destroyed the throttle
> linkage forcing the engine to max power which immediately raised the
> tail bringing the propeller into contact with the ground. Pilot shut
> down the engine with the mag switches and aircraft came to a rest just 2
> metres from the initial point but now in a tail high nose on the ground
> attitude. Rescuers lowered the aircraft into the correct attitude and
> pilot vacated..
> > Debris damaged a parked Volvo some 30-40 feet away.
> >
> > The purpose of the intended flight was to carry out a formation
> > display
> over the English Channel and then to depart off slot to Rotterdam (one
> hour over water transit) for a further over water display. The aircraft
> had completed two, one hour transits over the North Sea just 10 days
> prior.
> >
> > I leave you to muse the implications.
> >
> > I have posted pictures to the Photo Share site but these will be as
> > couple
> of days being published.
> >
> > Ignore the obvious implications at your peril.
> >
> > Fly Safe
> > kp
> >
> >
>
>
> direct advertising on the Matronics Forums.
>
>
Message 41
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| Subject: | Re: Yak 50 Air Bottle Failure |
--> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
A. Dennis Savarese wrote:
> --> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
>
> But not the pneumatic lines running down the right and left side of the
> airframe.
How much air pressure is going to be required to cause the pneumatic lines to fail?
Is something else likely to fail first? And if they do fail, what is the
damage likely to be, i.e. is it going to be a threat to the GIB?
--
Brian Lloyd 6501 Red Hook Plaza, Suite 201
brian@lloyd.com St. Thomas, VI 00802
+1.340.998.9447 - voice +1.360.838.9669 - fax
GMT-4
Message 42
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| Subject: | Re: Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
No idea Brian, but the fellow Doug was referring to that had his air system
explode, also had the lines explode too. That's why I mentioned the lines.
Dennis
----- Original Message -----
From: "Brian Lloyd" <brian@lloyd.com>
Subject: Re: Yak-List: Yak 50 Air Bottle Failure
> --> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
>
> A. Dennis Savarese wrote:
> > --> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
> >
> > But not the pneumatic lines running down the right and left side of the
> > airframe.
>
> How much air pressure is going to be required to cause the pneumatic lines
to fail? Is something else likely to fail first? And if they do fail, what
is the damage likely to be, i.e. is it going to be a threat to the GIB?
>
> --
>
> Brian Lloyd 6501 Red Hook Plaza, Suite 201
> brian@lloyd.com St. Thomas, VI 00802
> +1.340.998.9447 - voice +1.360.838.9669 - fax
> GMT-4
>
>
Message 43
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| Subject: | Yak 50 Air Bottle Failure |
--> Yak-List message posted by: "Gus Fraser" <fraseg@comcast.net>
I would think that a line failure would be less dramatic as the bore of the
line will act like a resistor in an electrical circuit and limit the
flow/current. What Kevin had was a 1mf capacitor discharge inside his
aircraft.
Gus
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of Brian Lloyd
Subject: Re: Yak-List: Yak 50 Air Bottle Failure
--> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
A. Dennis Savarese wrote:
> --> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
>
> But not the pneumatic lines running down the right and left side of the
> airframe.
How much air pressure is going to be required to cause the pneumatic lines
to fail? Is something else likely to fail first? And if they do fail, what
is the damage likely to be, i.e. is it going to be a threat to the GIB?
--
Brian Lloyd 6501 Red Hook Plaza, Suite 201
brian@lloyd.com St. Thomas, VI 00802
+1.340.998.9447 - voice +1.360.838.9669 - fax
GMT-4
Message 44
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| Subject: | Yak 50 Air Bottle Failure (pop off valve) |
--> Yak-List message posted by: "Gus Fraser" <fraseg@comcast.net>
Kevin,
Do you know if the pop off valve failed ? If that happened then the bottle
could have over pressured, it was sat on the ground long enough for some
serious pressure to build up. If you can could you have it tested and report
to the group ?
Gus
Message 45
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| Subject: | Re: Ummff issue. |
tests=ORIGINAL_MESSAGE,QUOTED_EMAIL_TEXT,REFERENCES,
USER_IN_WHITELIST
version=2.55
--> Yak-List message posted by: "Walt Lannon" <lannon@look.ca>
Dan;
If your tach was reading higher than the actual engine RPM it may be
possible that someone "corrected" the problem by a major adjustment of the
governor control arm. Might be worth looking into.
Walt
----- Original Message -----
From: <FOUGAPILOT@aol.com>
Subject: Yak-List: Ummff issue.
> --> Yak-List message posted by: FOUGAPILOT@aol.com
>
> Greeting one and all,
>
> Those whom flew with me at MTW/OSH recognisees as I did that my M14
equipped
> CJ definitely has a power issue. Well, we did find what the problem is,
we
> simply don't know what causes it. As suspected, my RPM gauge is at fault.
When
> takeoff power it set, my engine only turns 2500rpm. Yep, you read right,
I
> am missing a whole 450rpm, that will do it wont it? We measured the prop
RPM
> and transferred it to engine RPM using the ratio published in the
maintenance
> manual. My manifold pressure is also lower then it should, but with the
blower
> turning so slow it only makes sense. We first looked at the prop setting
and
> the throttle settings, and both appear to be correctly set.
>
> Any body ever heard of this before?
>
> Dan "performance challenged" Fortin
>
>
Message 46
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| Subject: | Re: Yak 50 Air Bottle Failure |
--> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
A. Dennis Savarese wrote:
> --> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
>
> No idea Brian, but the fellow Doug was referring to that had his air system
> explode, also had the lines explode too. That's why I mentioned the lines.
A hydraulic system or pneumatic system doesn't fail that way. The weakest link
fails, the pressure drops, and that eliminates the stress on the other devices.
Also, the compressors in our airplanes can't make 3000 psi. Other than that
...
--
Brian Lloyd 6501 Red Hook Plaza, Suite 201
brian@lloyd.com St. Thomas, VI 00802
+1.340.998.9447 - voice +1.360.838.9669 - fax
GMT-4
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