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1293 - PPL(H) Helicopter Theory Exam Questions in English - What aerodynamic effect is most relevant? Density altitude increases.

Question 1293 - Principles of Flight (Helicopter) - PPL(H) - Private Pilot Licence (Helicopter)

The altimeter setting becomes invalid.
rotor thrust and engine performance margins normally decrease.
The magnetic compass becomes the primary lift source.
The aircraft mass automatically decreases.

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