Beacon Identification Methods
When using only Mode 3/A RADAR beacon to identify a target, use one of the following
1. Request the aircraft to activate the ―IDENT‖ feature of the transponder and then
observe the identification display.
2. Request the aircraft to change to a specific discrete or non-discrete code, as
appropriate, and then observe the target or code display change.
3. Request the aircraft to change transponder to ―standby.‖ After you observe the
target disappear for sufficient scans to assure that loss of target resulted from
placing the transponder in ―standby‖ position, request the aircraft to return
transponder to normal operation and then observe the reappearance of the
4. ENROUTE During narrowband operations, an aircraft may be considered
identified when the full data block is automatically associated with the beacon
target symbol of an aircraft that is squawking a discrete code assigned by the
Inform an aircraft of its position whenever RADAR identification is established by means
of identifying turns or by any of the beacon identification methods. Position information
need not be given when identification is established by position correlation or when a
departing aircraft is identified within 1 mile of the takeoff runway end.
Establishing RADAR Identification
Inform aircraft of RADAR contact when:
1. Initial RADAR identification in the ATC system is established
2. RADAR identification is reestablished subsequent to loss of RADAR contact or
terminating RADAR service
Inform an aircraft when RADAR contact is lost.
RADAR Service Termination
Inform aircraft when RADAR service is terminated.
RADAR service is automatically terminated and does not need to be advised of
1. An aircraft cancels its IFR flight plan, except within Class B airspace, Class C
airspace, Terminal RADAR Service Area (TRSA), or where basic RADAR service
2. An aircraft conducting an instrument, visual, or contact approach has landed or
has been instructed to change to advisory frequency