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Instrument Rating Exam
· Practice
IREX.3.3
Topic:
Sources of altimeter QNH required to conduct operations under the IFR.
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Meteorology
Sources of altimeter QNH required to conduct operations under the IFR.
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What does QNH represent in aviation altimetry?
A.
The pressure setting that causes the altimeter to read field elevation when on the ground
B.
Atmospheric pressure adjusted to mean sea level using the International Standard Atmosphere (ISA) temperature lapse rate
C.
Atmospheric pressure at the aerodrome elevation
D.
The pressure setting that causes the altimeter to read zero at the aerodrome elevation
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