74 / 476
64
secondary surveillance radar
1 — RAD I O T E L EPHONY PROCEDURES
SecondarySurveillanceRadar (SSR) andADS-B
Circumstances
Phraseologies
*Denotes pilot transmission
1.
To instruct Setting of
Transponder (theword
‘code’ is not used in
transmissions).
to request:
reselection of the assigned
mode and code
reselection of aircraft
identification
confirmation ofModeA
Code selection
operation of the IDENT
feature
temporary suspension of
transponder operation
emergency code selection
termination of SSR
transponder or ADS-B
transmitter operation
transmission of pressure
altitude
pressure setting check and
confirmation of level
termination of pressure
altitude transmission
because of faulty operation
altitude check
confirmation of ADS-B
operation
change to secondary
transponder
•a. SQUAWK (code) [AND IDENT if required]
•b. *[SQUAWK] (code) [AND IDENT if instruced by
ATS]
•c. SQUAWKNORMAL
•d. RECYCLE [(mode)] (code)
•e. *RECYCLING [(mode)] (code)
•f. RE-ENTERMODES (or ADS-B) AIRCRAFT
INDENTIFICATION
•g. CONFIRMSQUAWK (code)
•h. *SQUAWKING (code)
•i. SQUAWK IDENT
•j. TRANSMITADS-B IDENT
•k. SQUAWKSTANDBY [TRANSMITADS-BONLY]
•l. SQUAWKMAYDAY
•m.STOPSQUAWK [TRANSMITADS-BONLY]
•n. STOPADS-B TRANSMISSION [SQUAWK
(code) ONLY]
•o. SQUAWKCHARLIE
•p. TRANSMITADS-BALTITUDE
•q. CHECKALTIMETERSETTINGAND
CONFIRMLEVEL
•r. STOPSQUAWKCHARLIE,WRONG
INDICATION
•s. STOPADS-BALTITUDE TRANSMISSION
[(WRONG INDICATION, or reason)]
•t. VERIFY [LEVEL] (level)
•u. ADS-BTRANSMISSIONSNOTRECEIVED,
CONFIRMADS-BOPERATIONAL
•v. SELECTSECONDARY TRANSPONDER
2.
Advice or traffic level
where the pressure
altitude derived level
information has not been
verified.
•a. UNVERIFIED LEVEL (level)