a/c must be equipped with an operable transponder with mode C…
- at and above 10000 ft msl and below floor of class A airspace excluding at and below 2500 ft agl
- in class A, B, and C airspace
If the mode C or transponder fails between 10000 msl and 17999 msl…
- advise manager
- coordinate with the next controller
If the mode C or transponder fails at or above 18000 msl…
- advise manager
- coordinate with next controller to obtain approval for the a/c to enter that sector
a mode is…
the letter or number assigned to a specific pulse spacing of radio signals transmitted or received by ground interrogator or airborne transponder components of the Air Traffic Control Radar Beacon System (ATCRBS)
3 different radar beacon modes are…
- Mode 3/A military and ATC common use
- Mode C civil use (altitude reporting)
- Mode S Traffic Alert and Collision Avoidance System (TCAS)
Assign beacon codes to Mode _____ equipped a/c only
Mode 3/A
Beacon codes are ____ digits and consist of digits __ through __
4;0;7
Discrete codes are beacon codes which…
do not end in the numerals 00
Give first preference to use of discrete or nondiscrete codes?
Discrete
“squawk”
_______ codes are beacon codes which end in the numerals 00
Nondiscrete
NBCAP airspace
airspace over US territory located within the North American continent including adjacent territorial waters
Primary goals of NBCAP
- minimize code changes
- retain same code from departure to destination
Do not request a code change until the a/c is in your area of responsibility unless….
- specified in an LOA
- coordinated at the time of handoff
- VFR a/c requests radar services
In an emergency do not request code change from…
- single piloted helicopters
- single piloted turbojet a/c
Controllers shall apply lost communications procedures by…
- emergency frequencies, voice capability navaids, FSS, arinc
- use transponder or turns to verify receipt of transmissions
Codes 1202, 1255, 1277, 4000
1202: glider ops
1255: fire fighting area
1277: SAR mission
4000: fast maneuvering a/c
Inform an a/c when assigned beacon code is not being displayed and….
transponder appears to be inoperative/malfunctioning
Inaccurate or inoperative Mode C may require ….
coordination and/or equipment suffix update
