| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | ST | Aerodrome control tower (TWR) | | | CI | Identification or radio call sign changed | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | B | For inclusion in Preflight Infomation Bulletins | | | O | Operationally significant for IFR flights | | | / | | | Scope | A | Aerodrome information | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 999 | Unlimited | | | / | | | Centre Latitude | 5120N | 51° 20' North' | | Centre Longitude | 00002E | 0° 2' East | | Radius of area affected | 005 | 5 nautical miles |
| | AIR TRAFFIC SERVICES COMMUNICATION FACILITIES UPDATED AS FOLLOWS : APP / TOWER 134.805 CALLSIGN ' BIGGIN ' GND 121.630 CALLSIGN ' BIGGIN GROUND ' ( AS DIRECTED BY ATIS OR AIR TRAFFIC CONTROL ) ATIS 135.680 CALLSIGN ' BIGGIN INFORMATION ' OTHER 121.605 CALLSIGN ' BIGGIN FIRE ' UK AERONAUTICAL INFORMATION PUBLICATION AERODROME 2.17,AERODROME 2.18,AERODROME 2.24 REFERS. |
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