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Free PSTAR practice Wake Turbulence

Hazardous wake turbulence caused by aircraft in still air

  1. Adissipates immediately.
  2. Bdissipates rapidly.
  3. Cmay persist for 5 minutes or more.Correct answer
  4. Dpersists indefinitely.

Why this is the answer

Per TC AIM-AIR (Wake Turbulence), vortices show little dissipation and in still air the hazardous wake of a large aircraft may persist for 5 minutes or more. Calm air is the worst case because there is no atmospheric turbulence to break the vortices up.

Reference

TC AIM-AIR – Wake Turbulence

Question reproduced verbatim from Transport Canada’s PSTAR Study and Reference Guide (TP 11919E). The answer key is Transport Canada’s; the explanation is ours.

A study aid — not a substitute for the official guide, the CARs, or your instructor.

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