Start free

Free PSTAR practice Communications

Pilots broadcasting on a MF where no ground station is in operation should direct their transmission to the

  1. Aaerodrome UNICOM.
  2. Bclosest ATC unit.
  3. Caerodrome traffic.Correct answer
  4. Dfirst aircraft heard on the frequency.

Why this is the answer

Per CAR 602.98 and the TC AIM, where no ground station is operating on an MF the pilot broadcasts to “(aerodrome) traffic,” addressing other aircraft directly rather than a closed UNICOM or a distant ATC unit.

Reference

TC AIM-RAC– Mandatory Frequency TC AIM-RAC– Use of MF and ATF, CARs 602.98

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.

More PSTAR questions on Communications

Ready to see where you stand?

Take the full 50-question PSTAR mock — the real 90-minute clock, graded the moment you finish. Free, no account.

Start the free mockRead the PSTAR guide