| 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 | 5128N | 51° 28' North' | | Centre Longitude | 00029W | 0° 29' West | | Radius of area affected | 001 | 1 nautical miles |
| | LONDON HEATHROW AERODROME OBSTACLES-NEW CRANE ADDED IN CIRCLING ARAD AND AT AERODROME TYPE : CRANE ID : 20251216118 POSITION : 512829N 0002926W ELEVATION : 43FT ABOVE GROUND LEVEL / 124FT ABOVE MEAN SEA LEVEL LIGHTING : RED REMARKS : HEATHROW AIRPORT CONTROL POST 18 WORK IN PROGRESS.CRANE WILL NOT OPERATING WHEN RUNWAY 09L / 27R IS OPERATING IN EASTERLY CONFIGURATION.CRANE WILL OPERATE WITHIN THE AREA BOUNDED BY THE FOLLOWING COORDINATES : 512830N 0002927W-512830N 0002928W-512827N 0002925W-512827N 0002924W.UK AERONAUTICAL INFORMATION PUBLICATION EGLL AERODROME 2.10 REFERS. |
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