| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | WU | Unmanned flight | | | LW | will take place | | | / | | | 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 | | | W | Navigational Warning | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 005 | 500 feet QNE | | | / | | | Centre Latitude | 5153N | 51° 53' North' | | Centre Longitude | 00009E | 0° 9' East | | Radius of area affected | 001 | 1 nautical miles |
| | UAS OPERATING WITHIN 0.1NM RADIUS OF 515311N 0000904E ( BIRCHANGER ). MAXIMUM HEIGHT 132FT ABOVE GROUND LEVEL.FOR INFO 07785 266744 / 07545 215494.AR-2026-6443 / 01. |
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