| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | XX | Miscellaneous | | | 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 | W | Navigational Warning | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 025 | 2500 feet QNE | | | / | | | Centre Latitude | 5107N | 51° 7' North' | | Centre Longitude | 00203W | 2° 3' West | | Radius of area affected | 011 | 11 nautical miles |
| | MULTIPLE HEL OPERATING WITHOUT LIGHT WITHIN 10NM RADIUS OF 510659N 0020301W ( 1.25NM NORTH-WEST OF CHILMARK ). FOR INFO 01264 784722.AR-2026-5528 / 01. |
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