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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > Meteorology > Which of these situations can favour hoar frost forming directly from water vapour on an aircraft in clear air?

546 - ATPL Question Bank in English - Which of these situations can favour hoar frost forming directly from water vapour on an aircraft in clear air?

Question 546 - Meteorology - ATPL - Airline Transport Pilot Licence

Flying inside convective clouds.

Flying inside stratiform clouds.

A cold-soaked aircraft enters warmer, moist air in a ground inversion while its skin remains below freezing and below the frost point of that air.

Flying in supercooled drizzle.

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