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221 - ATPL - If the pilot increases the reference pressure using the sub-scale setting knob, the altitude indicated by the altimeter:

Question 221 - Aircraft General Knowledge - Instrumentation - ATPL - Airline Transport Pilot license

Decreases if QNH > 1013 hPa.
Decreases if QNH < 1013 hPa.
Increases.
Decreases.

Training tests and timed exam simulations ATPL - Airline Transport Pilot license