ATC clearances and communicationsQuestion 211 of 351

Your IFR aircraft has a two-way radiocommunication failure in controlled airspace. Which transponder code do you set?

  1. 7500
  2. 7600
  3. 7700
  4. 1200
Show answer

Correct answer: 7600

Code 7600 means radiocommunication failure.

Source: Canadian Aviation Regulations (SOR/96-433), CAR 602.137(1)(b) Two-way Radiocommunication Failure in IFR Flight

Practice atc clearances and communications

Questions last reviewed: 18 October 2026