| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | FA | Aerodrome | | | AH | hours of service | | | / | | | 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 | 5100N | 51° 0' North' | | Centre Longitude | 00239W | 2° 39' West | | Radius of area affected | 005 | 5 nautical miles |
| | AERODROME OPERATING HOURS MON CLOSED TUE WED 0900-1600 AND 2030-0100 THU 0830-1600 AND 2030-0100 FRI 0800-1300 |
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