AIC 41.3(Radiotelephony Procedures) Communication Failure

Question 1

Communication failure(23.1):

When an aircraft fails to establish contact with the appropriate ATSU on the designated frequency, it shall attempt to -

If this attempt fails, the aircraft shall attempt to to establish communications with other -

In addition, an aircraft operating within a network shall monitor the appropriate frequency -

And -

Answer 1

establish contact on another frequency appropriate to the route.

Aircraft and/or air traffic services units on frequencies appropriate to the route

for calls from nearby aircraft,

squawk 7600

Question 2

Communication failure(23.2):

If the attempts specified under 23.1 fail, the aircraft shall transmit its message -

and, if necessary, include the -

Communication failure(23.3):

A message which is transmitted blind on the ______ ________ should be attempted to be transmitted ___ on any frequencies available. Before changing frequency, the aircraft should announce the frequency to which it is _______

Answer 2

twice on the designated frequency, preceded by the phrase “transmitting blind”

addressee for whom the message is intended

Communication failure(23.3):

A message which is transmitted blind on the primary frequency should be attempted to be transmitted twice on any frequencies available. Before changing frequency, the aircraft should announce the frequency to which it is changing

Question 3

Communication failure(23.4):

When an aircraft is unable to establish communication due to receiver _____, it shall ______ reports at the ________ times, or ________, on the frequency in use preceded by phrase “transmitting blind possible radio failure”. During this procedure, the aircraft shall also advise the time of its ___ intended __________ if the situation permits.

Communication failure(23.5):

An aircraft which is provided with air traffic control service, or for which overdue action is being provided, shall in addition to complying with the provisions of paragraph 23.4, transmit information regarding the intention -

Answer 3

When an aircraft is unable to establish communication due to receiver failure, it shall transmit reports at the scheduled times, or positions, on the frequency in use preceded by phrase “transmitting blind possible radio failure”. During this procedure, the aircraft shall also advise the time of its next intended transmission if the situation permits.

Communication failure(23.5):

of the pilot-in-command with respect to the continuation of the flight.