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Home > Exam Questions > ATPL - Airline Transport Pilot license > Aircraft General Knowledge - Instrumentation > When descending at a constant Mach number:

178 - ATPL - When descending at a constant Mach number:

Question 178 - Aircraft General Knowledge - Instrumentation - ATPL - Airline Transport Pilot license

The difference between surrounding conditions and ISA must be known to deduce the CAS variation.

CAS decreases.

CAS increases.

CAS remains constant.

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