Today's Message Index:
----------------------
1. 06:02 AM - Re: instrument selection (GRANSCOTT@aol.com)
2. 06:34 AM - Re: instrument selection (Tim Olson)
3. 08:28 AM - Re: instrument selection (John Ackerman)
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| Subject: | Re: instrument selection |
In a message dated 10/6/2007 12:51:17 AM Central Daylight Time,
dlm46007@cox.net writes:
Aren=99t we glad that there are experimental EFISs out there that have
TAWS or
terrain warnings (Chelton, GRT, etc)? Last night a medical flight hit a ridg
e
below the MSA in the vicinity of Alamosa CO.
One could also use a portable device such as a Garmin 496 or 396 or the Aspe
n
as situational awareness equipment for terrain besides the Chelton, GRT,
Garmin etc...
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| Subject: | Re: instrument selection |
Just make sure you integrate the audio into the system's unswitched
input so that you actually get "Terrain - Terrain" callouts in your
headset. If you're operating IFR on a less-integrated system, it can
sometimes be a handful to monitor a multitude of systems and you
don't want to miss an important warning like Terrain. I even feel
the Chelton is a good VFR unit if you're prone to scud running because
it not only calls out terrain, but obstructions as well, so you'd
be aware before you turned into a radio tower if you're flying around
at 800AGL in 1 mile vis clear of clouds. (Not something I recommend,
but perfectly legal in class G airspace)
I agree with David....I read a multitude of flying magazines each month
and my favorite parts are some of the "aftermath" type articles ,but
since flying behind the Chelton I've started to wonder "why the heck
did the guy who can afford that King Air (or Bonanza, Malibu, etc...)
not put in a nice TAWS EFIS system...they'd be alive today if the did."
Yes, these systems are THAT much different that really believe that
the vast majority of CFIT accidents would never happen if the entire
IFR fleet was suddenly "upgraded" today.
Tim Olson - RV-10 N104CD - Flying
do not archive
GRANSCOTT@aol.com wrote:
> In a message dated 10/6/2007 12:51:17 AM Central Daylight Time,
> dlm46007@cox.net writes:
>
> Arent we glad that there are experimental EFISs out there that have
> TAWS or terrain warnings (Chelton, GRT, etc)? Last night a medical
> flight hit a ridge below the MSA in the vicinity of Alamosa CO.
>
> One could also use a portable device such as a Garmin 496 or 396 or the
> Aspen as situational awareness equipment for terrain besides the
> Chelton, GRT, Garmin etc...
>
Message 3
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| Subject: | Re: instrument selection |
' On soapbox'
> I even feel the Chelton is a good VFR unit if you're prone to scud
> running because
> it not only calls out terrain, but obstructions as well, so you'd
> be aware before you turned into a radio tower if you're flying
> around at 800AGL in 1 mile vis clear of clouds. [emphasis mine,
> not Tim's]
Perhaps better than nothing for scud running, perhaps actually worse.
There are just too many towers uncharted and new ones going up all
the time, even in the flattish midwest. In the intermountain west,
scud running is just insane. Same for the East, I'd think.
IMO, the best use of terrain avoidance is to keep us WELL away from
terrain and obstacles, and that means IFR or on the ground when
conditions tempt us to scud run.
Been there, done that, (scud running) and have resolved never to do
so again. Ever. GOK what it would be like in a fast plane like the
10, even throttled back.
'Off soapbox '
The point you consistently make about integration, Tim, is well
taken, indeed.
Nonetheless, In the name of more complete redundancy and to achieve
legality for lowest GPS approaches, our plane will have two systems:
(1) The Cheltons fed by their own GPS plus an SL-30, and (2) an AFS
3500 + GI-106 fed by a 430.
The plan is that for single pilot operation, the pilot will use the
Chelton as primary. Traffic and terrain will normally be on the
Cheltons; WX and engine data on the 3500. The 3500 system would be
available as backup in event of failure, and as time and workload allow.
Two pilots are preferred for IFR, in which case the 3500/ 430 system
belongs to the FO. Two pilot operation may be possible because this
is to be a family airplane, but it remains to be seen how well we
will be able to implement it. In any event, this complex system will
require discipline, training, and well though out procedures,
especially for IFR.
John Ackerman 40458 beginning finishing kit
On Oct 6, 2007, at 6:33 AM, Tim Olson wrote:
>
> Just make sure you integrate the audio into the system's unswitched
> input so that you actually get "Terrain - Terrain" callouts in your
> headset. If you're operating IFR on a less-integrated system, it can
> sometimes be a handful to monitor a multitude of systems and you
> don't want to miss an important warning like Terrain. I even feel
> the Chelton is a good VFR unit if you're prone to scud running because
> it not only calls out terrain, but obstructions as well, so you'd
> be aware before you turned into a radio tower if you're flying around
> at 800AGL in 1 mile vis clear of clouds. (Not something I
> recommend, but perfectly legal in class G airspace)
>
> I agree with David....I read a multitude of flying magazines each
> month
> and my favorite parts are some of the "aftermath" type articles ,but
> since flying behind the Chelton I've started to wonder "why the heck
> did the guy who can afford that King Air (or Bonanza, Malibu, etc...)
> not put in a nice TAWS EFIS system...they'd be alive today if the
> did."
> Yes, these systems are THAT much different that really believe that
> the vast majority of CFIT accidents would never happen if the entire
> IFR fleet was suddenly "upgraded" today.
>
> Tim Olson - RV-10 N104CD - Flying
> do not archive
>
>
> GRANSCOTT@aol.com wrote:
>> In a message dated 10/6/2007 12:51:17 AM Central Daylight Time,
>> dlm46007@cox.net writes:
>> Aren=92t we glad that there are experimental EFISs out there
>> that have
>> TAWS or terrain warnings (Chelton, GRT, etc)? Last night a
>> medical
>> flight hit a ridge below the MSA in the vicinity of Alamosa
>> CO. One could also use a portable device such as a Garmin 496 or
>> 396 or the Aspen as situational awareness equipment for terrain
>> besides the Chelton, GRT, Garmin etc...
>
>
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