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Aircraft operation rulesQuestion 299 of 351

You operate an aircraft on water. Between which times must the position lights and anti-collision lights be on?

  1. Between one hour after sunset and one hour before sunrise.
  2. Between sunset and sunrise.
  3. Only when visibility is below three miles.
  4. Between the end of evening civil twilight and the beginning of morning civil twilight.
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Correct answer: Between sunset and sunrise.

On water, the lights must be on between sunset and sunrise. In the air or on the ground, the rule applies at night.

Source: Canadian Aviation Regulations (SOR/96-433), CAR 605.17(1) Use of Position and Anti-collision Lights

Practice aircraft operation rules

Questions last reviewed: 18 October 2026