| 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 | 5140N | 51° 40' North' | | Centre Longitude | 00055W | 0° 55' West | | Radius of area affected | 001 | 1 nautical miles |
| | OBSTACLE LIGHT UNSERVICEABLE POSITION 513955N 0005526W ( STOKENCHURCH,BUCKINGHAMSHIRE ) IN LOW FLYING AREA 1C AND NIGHT ROTARY REGION 1 HEIGHT 1117FT ABOVE MEAN SEA LEVEL ( 326FT ABOVE GROUND LEVEL ). 25 / 01 / 078 / LFC |
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