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lowest available flight level

beats working

Active member
Joined
Apr 16, 2002
Posts
29
Total Time
2700
Hi all,

Cramming for an interview here. I know that when pressure is low, FL180 is unavailable. Does anyone know the details--i.e. when is it unavialable. when is FL190 unavailable, etc.

Thanks!
 

AWACoff

Well-known member
Joined
Nov 27, 2001
Posts
1,121
Total Time
3000
Lowest usable flight level:
29.92 or higher- 180
29.91-29.42 - 185
29.41-28.92 - 190
28.91-28.42 - 195
28.41-27.92 - 200
27.91-27.42 - 205

etc, etc, etc....

This is contained in 91.121

Good luck with the interview. Relax and be yourself. If they didn't want to hire you, they wouldn't have invited you for an interview. Keep cramming, this wasn't very hard to find.
 

Speedtree

lovin' life
Joined
Jan 6, 2002
Posts
193
Total Time
4000
Just remember that below standard pressure, 29.92, FL180 is unavailable. I don't know who flies at FL185 and when is the last time you saw an altimeter below 29.41.
 

V-1

Well-known member
Joined
May 24, 2002
Posts
520
Total Time
8000
I've seen altimeter settings in the mid to low 28s on Feb. 25, 2001. Winds at one Michigan airport I took the Chieftain into that day were 35 kts. gusting to 46. Runway had just been upgraded from "nil" braking to "poor".

Gotta love flying freight - and differential power for crosswind landings!

Lowest recorded sea level pressure: Typhoon Tip, Oct. 1979 - 25.70 in/hg.
 
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