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Aviation occurrencesQuestion 346 of 351

Which event is a collision as the Regulations define it?

  1. Two aircraft that fly 500 feet apart in a circuit.
  2. A normal landing on a runway at the aerodrome.
  3. A bird that flies close to the aircraft in flight.
  4. An abnormal impact between an aircraft and terrain.
Show answer

Correct answer: An abnormal impact between an aircraft and terrain.

A collision is an impact, other than one linked to normal operating circumstances, between aircraft or between an aircraft and another object or terrain.

Source: Transportation Safety Board Regulations (SOR/2014-37), Section 2(6) Definitions — collision

Practice aviation occurrences

Questions last reviewed: 18 October 2026