Sunday, November 1, 2026 · Morning warm-up
Capt. Mike's Question of the Day.
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A pilot is planning a winter cross-country flight and wants to know where to expect freezing rain. According to the TC AIM, freezing rain and freezing drizzle aloft are typically found near
The answer
2warm fronts and trowals, where warm air overlies cold air
Explanation
TC AIM AIR 2.12.3.5: the classical mechanism producing freezing rain and freezing drizzle aloft "involves a layer of warm air overlaying a layer of cold air", and so "Freezing rain and freezing drizzle are therefore typically found near warm fronts and trowals, both of which cause warm air to overlay cold air." A pilot planning around forecast freezing rain looks for it beneath a warm frontal surface or a trowal.
Source
TC AIM AIR 2.12.3.5; TP 12880E Meteorology — Aircraft Icing: 1 In-flight − freezing rain; Fronts: 6 Warm front weather, 7 Trowal and upper front
Taught in: PPL › MeteorologyThis question is from the PPL course, which teaches every PPAER subject and drills it like this. Unlock all 7 chapters with their quizzes (105 questions), and 4 full-length PPAER mock exams.
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