| 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 | A | Aerodrome information | | | E | En-Route information | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 002 | 200 feet QNE | | | / | | | Centre Latitude | 5407N | 54° 7' North' | | Centre Longitude | 00312W | 3° 12' West | | Radius of area affected | 001 | 1 nautical miles |
| | MOBILE CRAWLER CRANE OPERATING WITHIN 0.1 NM RADIUS OF 540712N 0031158W ( 2.34NM,104.29 DEG MAGNETIC FROM WALNEY AERODROME REFERENCE POINT ). MAXIMUM HEIGHT 190FT ABOVE MEAN SEA LEVEL,150FT ABOVE GROUND LEVEL ) |
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