| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | CA | Air/ground | | | CF | operating frequency(ies) 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 | 5227N | 52° 27' North' | | Centre Longitude | 00145W | 1° 45' West | | Radius of area affected | 005 | 5 nautical miles |
| | GROUND FREQUENCY 121.805 UNSERVICEABLE.PILOTS ARE TO USE DELIVERY ON 121.930 |
|
