Great Plains Getting Crushed!

pljenkins

pljenkins

Resident Knucklehead
KLNK 071354Z 36012KT 10SM CLR M17/M23 A3103 RMK AO2 PK WND 34031/1320 SLP537 T11671228

For extra points, what's significant about this that might effect your go-no go decision?
 
Not sure if it applies, especially since the WX seems quite nice, but this is from the FAA..

(f) For aircraft operating IFR and unable to set the current altimeter setting, the following restrictions apply:

(1) To determine the suitability of departure alternate airports, destination airports, and destination alternate airports, increase ceiling requirements by 100 feet and visibility requirements by 1/4 statute mile for each 1/10 of an inch of Hg., or any portion thereof, over 31.00 inches. These adjusted values are then applied in accordance with the requirements of the applicable operating regulations and operations specifications.
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womanpilot73 said:
How high can they set the altimeters in the aircraft? That's just crazy...!
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Depends on the airplane. The old skool khollman window altimeters typically only go up to 30.99 (thus the FAR about 31.00 and above). Just checked the 737-300/500 goes to 31.04 and the 737-700/800 go to 32.00

31.00 is the limit. FAR 91.144 sets up a TFR for this.
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Sort of. Part 91.144 reads:

(a) Special flight restrictions. When any information indicates that barometric pressure on the route of flight currently exceeds or will exceed 31 inches of mercury, no person may operate an aircraft or initiate a flight contrary to the requirements established by the Administrator and published in a Notice to Airmen issued under this section.

This seems to indicate that, in the absence of a NOTAM, no restriction to operations applies. Clarification exists in AIM section 7-2-2 as to what procedures can be expected during periods where pressure exceeds 31.00. (This is what Luigi referenced, I believe).

Oh, and LNK and OMA are now at 31.06 and rising rapidly. No NOTAM as of yet... Reminds me of those funky weather patterns in the North Pacific!
 
Add 100ft and 1/4sm to approaches every 1/10" above 31.00".

Also if the weather reporting can't measure above 31" then it will be missing and vfr ops only.
Aim 7-2-2
 
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ackeight said:
Add 100ft and 1/4sm to approaches every 1/10" above 31.00". Also if the weather reporting can't measure above 31" then it will be missing and vfr ops only. Aim 7-2-2
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Just read this section today. Learn something new every day!
 
I flew to Rapid City the other day when the altimeter was 31.00. I was trying to remember what the cutoff was (31 or 32) but figured it had to be 31.00 when my standby altimeter only went to 31.14.

ATC gave me a different setting when starting my descent of 31.09, and seemed to be no big deal.
 
Especially considering the weather, I couldn't imagine anyone being overly concerned about that. I wouldn't
 
Yeah it was never a safety of flight thing since it was Chamber of Commerce weather, but it did spark a very interesting conversation in the office and an interesting opportunity to learn!
 
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