| 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 | 007 | 700 feet QNE | | | / | | | Centre Latitude | 5408N | 54° 8' North' | | Centre Longitude | 00350W | 3° 50' West | | Radius of area affected | 004 | 4 nautical miles |
| | REPORT OF AIR NAV OBSTACLE LIGHT UNSERVICEABLE WITHIN AREA BOUNDED BY 540931N 0034935W-540803N 0034454W-540749N 0034611W-540456N 0034909W-540647N 0035506W-540810N 0035508W-540757N 0035338W-540931N 0034935W ( WALNEY ). HEIGHT 640FT ABOVE GROUND LEVEL / 700FT ABOVE MEAN SEA LEVEL.AR-2026-7998 / 01. |
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