After a Canadian privately registered aircraft has made initial contact with an ATS unit, which items may be omitted from subsequent transmissions? The aircraft type and

Aany registration letters omitted by ATS in the last communication.
Bthe first two letters of the registration, if initiated by ATS.Correct answer
Cthe first three letters of the registration.
Dthe phonetic equivalents.

Why this is the answer

Per the TC AIM, on subsequent transmissions a privately registered aircraft may drop the type and the first two letters of the registration — but only if ATS abbreviated the call sign first; the pilot does not shorten it unilaterally.

Reference

TC AIM-COM– Call Signs / Civil Aircraft

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.

After a Canadian privately registered aircraft has made initial contact with an ATS unit, which items may be omitted from subsequent transmissions? The aircraft type and

Why this is the answer

Reference

More PSTAR questions on Communications

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