EASA ATPL Practice Test & Exam Prep

What is the ISA temperature at the tropopause (11 km / FL360) and how does it behave above that level up to 20 km?

-40 degC, then it decreases steadily -56.5 degC, then it increases immediately -56.5 degC, then it remains constant up to 20 km -65 degC, then it remains constant

Correct Answer:

-56.5 degC, then it remains constant up to 20 km

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