PPRuNe Forums - View Single Post - Stupid question – altimeters.
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Old 1st Feb 2014, 09:10
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If you are flying an N-reg aircraft with a mechanical altimeter in the UK/Europe then you just need to carry a small conversion chart to get you from HPa to inHg.

Or you could always ask ATC, as one pilot (allegedly) once did::

"N12345 descend altitude 3,000ft QNH 1022"

"Could I have that in inches please Ma'am?"

"N12345 descend altitude 36,000 inches QNH 1022"
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