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Home > Exam Questions > ATPL - Airline Transport Pilot license > Aircraft General Knowledge - Instrumentation > Below the tropopause, when descending at constant CAS:

14 - ATPL - Below the tropopause, when descending at constant CAS:

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

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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