Indicates inability to comply with a specific
instruction, request, or clearance.
EXAMPLE: "_____ APPROACH, [Call sign],
unable to execute the ILS approach."
Heading issued to an aircraft to provide navigational
guidance by radar.
EXAMPLE: "[Call sign], _____ CENTER, turn left
090, vector for traffic."
Request confirmation of information.
EXAMPLE: "Verify assigned altitude."
I have received your message, understand it and will
EXAMPLE: "[Call sign], _____ GROUND, taxi
runway 13L." "[Call sign], wilco."
Adherence to the following guidelines will assist you in the application of proper radio
The format for contacting an agency is always, "Agency called, aircraft identification,
If at a loss for the "right" words, remember: WHO you are, WHERE you are, and
WHAT you want.
When instructed to squawk or ident on your IFF, no verbal response is necessary
unless confusion exists.
"[Call sign], _____ DEPARTURE, squawk 0622." (Dial Code 0622 in
aircraft's IFF transponder.)
"[Call sign], _____ DEPARTURE, IDENT." (Momentarily select the
ident position on the transponder.)
When advised to "contact" a new controlling agency, acknowledge with "switching"
and repeat the specific frequency.
"[Call sign], _____ DEPARTURE, contact Houston Center on
322.4." "[Call sign], switching 322.4."
If unable to contact the new agency on the frequency given, return to
the transferring agency and state, "No joy." The transferring agency
will give you an alternate frequency to reattempt contact.