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Aircraft operation rulesQuestion 68 of 351

Which items are critical surfaces?

  1. Antennas and lights only.
  2. Wings, control surfaces, rotors, propellers and stabilizers.
  3. Seats, doors and windows.
  4. Tyres and brakes.
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Correct answer: Wings, control surfaces, rotors, propellers and stabilizers.

Critical surfaces include wings, control surfaces, rotors, propellers and stabilizing surfaces.

Source: Canadian Aviation Regulations (SOR/96-433), CAR 602.11(1) Aircraft Icing

Practice aircraft operation rules

Questions last reviewed: 18 October 2026