092 - IFR Communications ATPL(A) (EASA 2016)

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What is the correct phraseology for a temporary suspension of transponder operation?

If ATC want you to suspend the use of your transponder, their instruction will be:

As a pilot you must acknowledge this request and select your transponder to the standby setting.

The answer 'XPDR standby' is incorrect as the instruction phraseology is 'squawk' and not 'transponder' (XPDR).

ICAO Doc 4444
Chapter 12. Phraseologies

12.4.3.8 TO REQUEST TEMPORARY SUSPENSION OF TRANSPONDER OPERATION: SQUAWK STANDBY.

You can find the related phraseology about transponder operations below:

Phraseology	Meaning
Squawk "1234"	Set the transponder code "1234"
Reset squawk "1234"	Reset the previously issued code "1234"
Squawk IDENT	Turn on the function IDENT
Squawk standby (STBY)	Operate your transponder in the standby mode
Confirm squawk	Confirm your squawk, read your squawk
Stop squawk	Turn off the transponder
Squawk Alpha/Charlie/Sierra	Change the transponder mode to Alpha/Charlie/sierra
Squawk VFR	Squawk 7000 in most European countries Squawk 1200 in North America
Squawk Mayday	Set the emergency code 7700 on your transponder

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