| 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 | 008 | 800 feet QNE | | | / | | | Centre Latitude | 5327N | 53° 27' North' | | Centre Longitude | 00049E | 0° 49' East | | Radius of area affected | 001 | 1 nautical miles |
| | REPORT OF AIR NAV OBSTACLE LIGHT UNSERVICEABLE AT POSITION : 532659N 0004847E ( TRITON KNOLL WINDFARM ). HEIGHT 720FT ABOVE MEAN SEA LEVEL.FOR INFO 01793 896 250.AR-2026-5606 / 02. |
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