Today's Message Index:
----------------------
1. 03:54 AM - Re: Near miss, Vancouver (Steven)
2. 05:40 AM - Main Gear Clevis Failure (steve2)
3. 07:51 AM - Aero Commander 680 FL Aircraft USED Engine IGSO-540-BIA LYCOMING ENGINE & HART (BertBerry1@aol.com)
4. 09:12 AM - Re: Main Gear Clevis Failure (YOURTCFG@aol.com)
5. 09:21 AM - Re: Main Gear Clevis Failure (mike floyd)
Message 1
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Subject: | Re: Near miss, Vancouver |
--> Commander-List message posted by: "Steven" <steve2@sover.net>
We added last year a Garmin 480/MX20 combo with the Mode S transponder. We
got the TIS-B traffic system because with the aerial survey we do even in
VFR conditions there is a lot of heads-down time. It's like flying an
approach all day.
The TIS-B is pretty neat. The only problem is once in a while there is pop
up traffic so close there's almost no time to do anything about it. The box
warns "Traffic" and scares you silly. Hell, if it's that close maybe it
would be better not to know.
(Joking aside, that usual is happening when someone is closing to within
less than a mile but at a different enough altitude for you to not have seen
them visually. It gets you going though.)
Steve
----- Original Message -----
From: "Tom Fisher" <tfisher@commandergroup.bc.ca>
Sent: Tuesday, April 18, 2006 2:29 PM
Subject: Commander-List: Near miss, Vancouver
> --> Commander-List message posted by: "Tom Fisher"
> <tfisher@commandergroup.bc.ca>
>
> This is the second attempt to send this because the previous Email was
> rejected as I had "cheap life insurance" in the subject line.
> ************************************************
>
> Happy to see the sunrise again.
>
> Since I obtained my abused 680FLP I have been bringing it up to spec. and
> was out on a test flight with an engineer setting up the rigging on all
> the controls.
> The wx. was 3000 overcast with rain showers, we were doing a VOR hold at
> 2500 feet during which we were being feed traffic information of VFR
> training aircraft below and around us being controlled by another agency
> for that altitude.
> On our last inbound leg, clipping along at 190 with 75% power, the
> engineer had just finished recording all that had to be recorded.
> I advised the controlling agency (radar) that we were ready to return for
> landing. As I was waiting for the clearance I had my eyes inside to
> adjust the EGT's (the engineer wanted full rich for the tests) before I
> got the needles where I wanted them I heard the transmission "traffic"....
> as soon as the word "traffic" was processed by my brain I looked up and
> before "12 O'clock" was heard I saw a single-engine Cessna in a steep
> climbing left turn about 50 feet below me and maybe 1000' in front of me
> going right to left. I yarded up and to the right on the yoke, yes we
> missed him, but not by much, I'm sure had we not done the avoidance
> maneuver we would have clipped him. I'm sure the Cessna never saw us.
> Radar apologized profusely siting transponder recognition issues with
> adjacent controlling agencies.
>
> I since have tested a "PCAS" Portable Collision Avoidance System that is
> the size of a deck of cards. There are a couple of models of this type
> out there and it seems to work quite well, this one for under $500. I am
> getting one; I am also going to try a get funding to supply one for each
> of our search aircraft.
> Cheap life insurance.
>
> Tom F.
> C-GISS 680FLP (Mr.RPM)
>
>
>
Message 2
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Subject: | Main Gear Clevis Failure |
--> Commander-List message posted by: "steve2" <steve2@sover.net>
We had an interesting failure the other day I thought I might pass along to
the group.
The main gear retract cylinders are attached to the the gear by two clevises
(clevi?) each. They look a like a fork. The pieces look robust enough (and
obviously well suited to the task since they've lasted 45 years.) The fork
portion of the clevis is attached to a tube which is secured into the gear
by a bolt and barrel nut. The 'tube' is not a solid bar.
One clevis broke the other day while putting the gear down, leaving a
retract cylinder just hanging. It appears that the failure was a long time
coming as there was evidence of old damage to the broken piece. (Aircraft
had to be slowed to allow the one cylinder do the job.)
We all scratched our heads wondering if anything any of us ever did
contributed to the failure. The old-timer here even thought back to the time
that the gear didn't rotate upon retraction. Maybe its overkill but I'm
always careful to try to lower the gear when I can grab some smooth air.
It might not be a bad idea to make pulling these clevis every so often part
of your inspection. This summer after our season ends we were going to take
the gear apart, but this clevis beat us to it. They are pretty easy to drop
and a little wooden wedge jamming the barrel nut in place will save some
grief reinstalling.
Our new part arrived with different geometry and a different hole size for
the bolt securing the cylinder end to the clevis. We're a 500A converted to
a B in 64(?) so this might have something to do with it, but be aware it
might not be plug-and-play if you swap any out.
Steve
Message 3
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Subject: | Aero Commander 680 FL Aircraft USED Engine IGSO-540-BIA |
LYCOMING ENGINE & HART
--> Commander-List message posted by: BertBerry1@aol.com
Hey Guys,
Not sure if this interest anyone, but, I saw this on Ebay this morning.
http://cgi.ebay.com/ebaymotors/Aero-Commander-680-FL-Aircraft-USED-Engine_W0QQ
cmdZViewItemQQcategoryZ50453QQitemZ8059908973QQrdZ1
Bert
Message 4
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Subject: | Re: Main Gear Clevis Failure |
--> Commander-List message posted by: YOURTCFG@aol.com
In a message dated 4/25/2006 5:41:16 A.M. Pacific Standard Time,
steve2@sover.net writes:
It might not be a bad idea to make pulling these clevis every so often part
of your inspection.
This is a fairly common failure. It may be caused by the cylinder not being
properly rigged. Carefully follow the Commander service instructions for
rigging the gear. The TCFG recommends that these forks be replace at about
1000hr, more frequently if the airplane is used on short flights. Some
operators remove and magniflux these part periodically, but replacement makes
good
sense. jb
Message 5
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Subject: | RE: Main Gear Clevis Failure |
--> Commander-List message posted by: "mike floyd" <floydgm@hotmail.com>
I have seen more than one failure of the clevis. If the mount holes are a
different size you probably have the clevis for the main cylinder. You also
want to look at the others and maybe get them magnafluxed.
Mike
Commander NW
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