PPRuNe Forums - View Single Post - why always high Qnh in mountain airports?

10th Feb 2002, 14:28

#15 (permalink)

max motor

Join Date: Apr 2000

Location: london

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"This is true even if the actual pressure remains the same"

INCORRECT

A Barometric altimeter is calibrated to detect changes in pressure only. In fact great care is taken to ensure that temperature DOES NOT affect the reading.

Max