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Thread: QFE / QNH
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Old 3rd July 2006 | 22:32
  #29 (permalink)  
SparkyBoy
 
Joined: Jun 2006
Posts: 39
Likes: 0
From: London
Ooooh, thanks all for the input - looks like a hot subject

I understand that QFE is the airodrome pressure, which gives you a 0 on your Altimeter, but in fact you may actually be several hundred feet above mean sea level.
The QNH being the regional pressure in your current area based on your current height above mean sea level.

The pros for using QFE is that when you land it reads 0 on your altimeter.

The pros for using QNH are that you are given a height which allows you to corrolate with the height obstacles marked on a map and it's the only thing used outside.

Hopefully I got it!

I think at this point I'll stick to QFE while I'm learning so I know I got my 1000 ft over the a/d for the circuit.

ps. I didn't know QFE was related to Military ATZ's. Hope that question comes up in one of my exams.
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