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A radar controller observing a 7600 code shall request thepilot to operate
the identification (SPI) function. If the identification signal is received, further
control of the aircraftwill be continued using the identification transmission to
acknowledge receipt of instructions issued.
If the identification isnot received, theaircraftmust continuewith the transponder
oncode7600and follow radio failureproceduresonpages390-394.
RADIOCOMMUNICATIONSPROCEDURES
Pilots requestingATS surveillance services should address their request to
theATS unitwithwhich they are communicating.
ATS surveillance services
T
S
E
T
T
L
A
N
O
Y
B
T
S
F
F
O
IDENT
7 7 00
EMERGENCY
T
S
E
T
T
L
A
N
O
Y
B
T
S
F
F
O
IDENT
7 6 00
COMM FAILURE
3 – general i nformat i on