| 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 | 5129N | 51° 29' North' | | Centre Longitude | 00030W | 0° 30' West | | Radius of area affected | 001 | 1 nautical miles |
| | LIT CONSTRUCTION EQPT OPERATING AT POSITION 512839N 0002939W ( HEATHROW AERODROME ). MAXIMUM HEIGHT 34FT ABOVE GROUND LEVEL / 111FT ABOVE MEAN SEA LEVEL.WILL ONLY OPERATING WHEN RUNWAY 09L / 27R IS CLOSED.NO OPERATIONS IN LVP.CRANE REF 20260707134.UK EGLL OBSTACLE DATASET REFERS. |
|
