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ATC clearances and communicationsQuestion 206 of 351

When may you deviate from an ATC clearance for a collision avoidance manoeuvre?

  1. When another pilot asks you on the radio
  2. When the weather looks poor
  3. When you feel tired
  4. When you follow an ACAS resolution advisory or a TAWS or GPWS alert
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Correct answer: When you follow an ACAS resolution advisory or a TAWS or GPWS alert

The law allows a deviation only to the extent needed for these collision avoidance cases.

Source: Canadian Aviation Regulations (SOR/96-433), CAR 602.31(3) Compliance with Air Traffic Control Instructions and Clearances

Practice atc clearances and communications

Questions last reviewed: 18 October 2026