| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | OB | Obstacle | | | CE | erected | | | / | | | 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 | 003 | 300 feet QNE | | | / | | | Centre Latitude | 5218N | 52° 18' North' | | Centre Longitude | 00005W | 0° 5' West | | Radius of area affected | 001 | 1 nautical miles |
| | UNLIT MAST POSITION 521819N 0000433W ( HUNTINGDONSHIRE,CAMBRIDGESHIRE ) IN LOW FLYING AREA 6 AND NIGHT SECTOR 5A HEIGHT 230FT ABOVE MEAN SEA LEVEL ( 130FT ABOVE GROUND LEVEL ). 26 / 09 / 051 / LFC |
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