Before you provide radar service, establish and maintain radar identification of the aircraft involved, except as provided in Paragraph 5-5-1, Application, subparagraphs b2, b3 and in Paragraph 8-5-5, Radar Identification Application.
Identify a primary or radar beacon target by using one of the following methods:
NOTE: Nonverbal notification can be accomplished via the use of a manual or electronic “drop tube” or automation.
NOTE: Use of identifying turns or headings which would cause the aircraft to follow normal IFR routes or known VFR flight paths might result in misidentification. When these circumstances cannot be avoided, additional methods of identification may be necessary.
When using only Mode 3/A radar beacon to identify a target, use one of the following methods:
NOTE: Paired LDBs in ERAM do not display a beacon code.
NOTE: The AIM informs pilots to adjust Mode C transponders with altitude reporting capability activated unless deactivation is requested by ATC. Squawk altitude is included to provide applicable phraseology.
Inform an aircraft of its position whenever radar identification is established by means of identifying turns or by any of the beacon identification methods outlined in para 5-3-3, 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.
Retain data blocks that are associated with the appropriate target symbol in order to maintain continuous identity of aircraft. Retain the data block until the aircraft has exited the sector or delegated airspace, and all potential conflicts have been resolved; including an aircraft that is a point out. The data block must display flight identification and altitude information, as a minimum. The displayed altitude may be assigned, interim, or reported.
ERAM: When you have separation responsibility for an aircraft and a paired track exists, display a full data block (FDB).
NOTE: Where delegated airspace extends beyond Class B and/or Class C airspace, the following will apply: If a VFR aircraft is clear of Class B and Class C airspace and radar services have been terminated then retention of the data block is no longer required.