| Significance | Code | Meaning |
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| 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 | 014 | 1400 feet QNE | | | / | | | Centre Latitude | 5013N | 50° 13' North' | | Centre Longitude | 00514W | 5° 14' West | | Radius of area affected | 001 | 1 nautical miles |
| | REPORT OF OBSTACLE LIGHT UNSERVICEABLE.OBSTACLE MAST AT POSITION 501235N 0051419W ( FOUR LANES ). HEIGHT 571FT ABOVE GROUND LEVEL 1358FT ABOVE MEAN SEA LEVEL.AR-2025-2596 / 01. |
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