| 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 | 005 | 500 feet QNE | | | / | | | Centre Latitude | 5114N | 51° 14' North' | | Centre Longitude | 00157W | 1° 57' West | | Radius of area affected | 001 | 1 nautical miles |
| | MAST AT POSITION 511347N 0015630W ( WESTDOWN CAMP,TILSHEAD ) IN LOW FLYING AREA 1A AND NIGHT ROTARY REGION 1 HEIGHT 490FT ABOVE MEAN SEA LEVEL ( 100FT ABOVE GROUND LEVEL ) UNLIT.26 / 06 / 149 / LFC. |
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