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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > Aircraft General Knowledge - Instrumentation > In the International Standard Atmosphere below the tropopause, during a subsonic descent at constant CAS:

14 - ATPL Question Bank in English - In the International Standard Atmosphere below the tropopause, during a subsonic descent at constant CAS:

Question 14 - Aircraft General Knowledge - Instrumentation - ATPL - Airline Transport Pilot Licence

Mach number decreases and the velocity of sound increases.

Mach number and the velocity of sound decrease.

Mach number and the velocity of sound increase.

Mach number increases and the velocity of sound decreases.

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