| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | OL | Obstacle lights | | | AS | unserviceable | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | M | Miscellaneous | | | / | | | Scope | E | En-Route information | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 012 | 1200 feet QNE | | | / | | | Centre Latitude | 5127N | 51° 27' North' | | Centre Longitude | 00324W | 3° 24' West | | Radius of area affected | 001 | 1 nautical miles |
| | AIR NAV OBSTACLE LIGHT UK0229A035F RTM WENVOE MAST.SINGLE UNSERVICEABLE POSITION = 512733.54N 0031653.72W,ELEV 1319FT ABOVE MEAN SEA LEVEL / HEIGHT = 883FT ABOVE GROUND LEVEL. |
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