Tuesday, November 3, 2026 · Morning warm-up
Capt. Mike's Question of the Day.
Two questions for the Transport Canada pilot written exams every day: a morning warm-up and an evening Captain's Challenge. Each one answered, explained and cited, free. Tap your answer to see how you did.
This is a past question.The latest question
Capt. Mike: Here's the question I asked that day. Tap your answer.
The pilot of an aircraft subjected to unlawful interference should set the transponder to:
The answer
17500
Explanation
TC AIM COM 8.8: Canada has adopted "a special secondary surveillance radar (SSR) transponder code (7500) for use by pilots of aircraft subjected to an act of unlawful interference." Selecting it activates an alarm at the ATC unit.
Memory tip: 75 = taken alive (unlawful interference).
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