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View Full Version : Winter Ops Quesiton


2StgTurbine
12-04-2016, 04:46 PM
ATTEN Mods. I am posting this here to get more visibility for pilots who would know the answer.

In regards to Cold Weather Restricted Airport procedures as outlined in AIM 7-2-3 and NOTAM GEN16001, what is an approved method for interpolation?

For example, runway 15 into KBTV. When crossing FOVES (the FAF) outbound prior to beginning the procedure turn, the minimum altitude is 2,400 ft MSL which is 2,065 ft above the airport. The altimeter correction table in AIM 7-2-3 only has options for 2,000 feet or 3,000 feet above the airport. Does anyone know what the FAA wants us to use? I know that the most conservative option is to use the 3,000 ft column, but that seems extreme for only being slightly above the 2,000 ft column.


Flyer49er
12-05-2016, 08:54 AM
ATTEN Mods. I am posting this here to get more visibility for pilots who would know the answer.

In regards to Cold Weather Restricted Airport procedures as outlined in AIM 7-2-3 and NOTAM GEN16001, what is an approved method for interpolation?

For example, runway 15 into KBTV. When crossing FOVES (the FAF) outbound prior to beginning the procedure turn, the minimum altitude is 2,400 ft MSL which is 2,065 ft above the airport. The altimeter correction table in AIM 7-2-3 only has options for 2,000 feet or 3,000 feet above the airport. Does anyone know what the FAA wants us to use? I know that the most conservative option is to use the 3,000 ft column, but that seems extreme for only being slightly above the 2,000 ft column.

Lots of great information/discussion here:

http://forums.propilotworld.com/showthread.php?111215-Cold-Temperature-Restricted-Airports (http://http://forums.propilotworld.com/showthread.php?111215-Cold-Temperature-Restricted-Airports)

http://forums.propilotworld.com/showthread.php?100456-Cold-Temperature-Restricted-Airports-Mandatory-Compliance-Is-Coming (http://http://forums.propilotworld.com/showthread.php?100456-Cold-Temperature-Restricted-Airports-Mandatory-Compliance-Is-Coming)

http://forums.propilotworld.com/showthread.php?94730-Mandatory-Cold-Temperature-Compensation (http://http://forums.propilotworld.com/showthread.php?94730-Mandatory-Cold-Temperature-Compensation)

BPWI
12-05-2016, 09:01 AM
This might sound stupid, but do you have the Temp Comp function on your FMS? Makes the dissemination of numbers monumentally easier.....


2StgTurbine
12-05-2016, 12:08 PM
This might sound stupid, but do you have the Temp Comp function on your FMS? Makes the dissemination of numbers monumentally easier.....

Nope. Just one of those crappy FMS units that they only charge $90,000 for.

galaxy flyer
12-05-2016, 06:24 PM
BPWI,

I suspect only Bombardier has temp comp in the FMS, haven't seen it even on the B777.

GF

4V14T0R
12-06-2016, 04:27 AM
BPWI,



I suspect only Bombardier has temp comp in the FMS, haven't seen it even on the B777.



GF



That's interesting. The E170/175 has that capability.


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awacs
12-06-2016, 07:39 AM
Suggest linear interpolation.

BPWI
12-06-2016, 11:32 AM
BPWI,

I suspect only Bombardier has temp comp in the FMS, haven't seen it even on the B777.

GF

The OP didn't state what he was flying, but it's surprising to me that any corporate aircraft over a useful range of 5k didn't inherit that function. Only had to use it a handful of times, but sure is handy when needed.
Learning something new everyday-

N5139
12-06-2016, 12:03 PM
BPWI,



I suspect only Bombardier has temp comp in the FMS, haven't seen it even on the B777.



GF



Most Gulfstreams have this feature.


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Lucky8888
12-06-2016, 05:28 PM
BPWI,

I suspect only Bombardier has temp comp in the FMS, haven't seen it even on the B777.

GF

It's been in the Falcon 900LX since 2012. It's also in our G650's. I'm sure it's in a lot of business aircraft.

galaxy flyer
12-06-2016, 06:53 PM
Learn something everyday

GF

Lucky8888
12-07-2016, 06:43 PM
Learn something everyday

GF

Don't we all.

badflaps
12-07-2016, 11:34 PM
Christmas Eve 1984, ILS out, I did an ASR in BTV. Try that now.

RI830
12-08-2016, 04:03 AM
Christmas Eve 1984, ILS out, I did an ASR in BTV. Try that now.

In the snow and ice with no shoes....and it was an uphill approach too?!

badflaps
12-08-2016, 06:24 AM
In the snow and ice with no shoes....and it was an uphill approach too?!

Lions, taggers, shoes were flip-flops. There was too much snow to tell if it was uphill.:D



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