| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | ST | Aerodrome control tower (TWR) | | | XX | miscellaneous plain language | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | N | For immediate attention of aircraft operators | | | 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 | 5320N | 53° 20' North' | | Centre Longitude | 00251W | 2° 51' West | | Radius of area affected | 005 | 5 nautical miles |
| | AIR TRAFFIC CONTROL WILL CONDUCT A DUPLEX COM TRIAL.AIRCREW SHOULD BE ADVISED THAT RADIO TRANSMISSIONS MADE BY GROUND UNITS WILL BE HEARD ON TOWER FREQUENCY 126.355MHZ AND GROUND FREQUENCY 121.955MHZ.DURING RITT ( RADAR IN THE TOWER ) OPERATIONS VEHICLE TRANSMISSIONS WILL ALSO BE HEARD ON APPROACH FREQUENCY 119.855MHZ.FOR ANY FURTHER INFORMATION CONTACT AIR TRAFFIC CONTROL ON 0151 907 1542. |
|
