| 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 | 004 | 400 feet QNE | | | / | | | Centre Latitude | 5131N | 51° 31' North' | | Centre Longitude | 00019W | 0° 19' West | | Radius of area affected | 001 | 1 nautical miles |
| | LIT CRANE AT POSITION 513033N 0001913W ( HANWELL,LONDON ) IN THAMES VALLEY AVOIDANCE AREA DAY AND NIGHT HEIGHT 400FT ABOVE MEAN SEA LEVEL ( 300FT ABOVE GROUND LEVEL ). 26 / 06 / 021 / LFC |
|
