How low can you set your altimeter pressure...?
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How low can you set your altimeter pressure...?
The pressure here is currently 950mb. In the days of pre-digital cockpits most altimeters had a physical limit on how low the pressure could be set.
Is it an issue with the current generation of aircraft?
Is it an issue with the current generation of aircraft?
Last edited by Biggus; 13th Dec 2011 at 17:39.
Join Date: Jul 2006
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In my years as a Nav Inst Fitter
I seem to remember that the limitation on Barometric Altimeters was in the region of 28in to 31in on yank kit or 950mb to 1050mb on our good old British stuff don't know about glass cockpit but it was all to do with the amount you could flex or compress the pressure bit inside the altimeter.
Just who is Hector Pascal
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Surely the point is moot. If the pressure in the uk is 950 I thought your biggest issue was keeping the doors on the hangar much less worrying how to work out how high you are.
Alba Gu Brath
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Dusting off the brain cells, wasn't QNE used once the pressure fell off the bottom of the dial? Seem to recall it was 940 or 945mb. St. Mawgan recorded 948 during the Oct 87 storm.
Physical limit
Biggus
In the days of pre-digital cockpits most altimeters had a physical limit on how low the pressure could be set.
In the days of pre-digital cockpits most altimeters had a physical limit on how low the pressure could be set.
franzl
Airbooses go down to 745mb and up to 1050/1100mb depending on MSN/type
Lowest I have set personally is 932mb (the center of the low pressure system was estimated at 928mb), highest 1047mb, at the same airport.
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I don't know why but back in the days of the CAA ATPL exams before all this fangled euro thingy, one of the exam questions was the range of an altimeter's setting on the mb scale and the answer was 950-1050. Thanks PPSC you may be gone but you engrained some pretty useless stuff in my memory...... if only I could remember to read the wind of the ND when selecting flap 1 these days..............
Tightgit
I think it's just a trans-gender issue! You never see Hector or Millie in the same place. If you ask me, I think they're the same ........person