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385 - ATPL - An aircraft is flying over the sea at FL 120, with a true altitude of 12000 feet; local QNH is 1013 hPa. What assumption, if any, can be made about the air mass in which the aircraft is flying?

Question 385 - Meteorology - ATPL - Airline Transport Pilot license

Its average temperature is the same as ISA
There is insufficient information to come to any conclusion
It is warmer than ISA
It is colder than ISA

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