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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > Principles of Flight > An aeroplane descends from FL350 at a constant Mach number in ISA conditions, remaining below the tropopause. What happens to its true airspeed?

189 - ATPL Question Bank in English - An aeroplane descends from FL350 at a constant Mach number in ISA conditions, remaining below the tropopause. What happens to its true airspeed?

Question 189 - Principles of Flight - ATPL - Airline Transport Pilot Licence

It decreases as pressure increases

It increases as temperature increases

It remains constant

It decreases as altitude decreases

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