| Significance | Code | Meaning |
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| 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 | 003 | 300 feet QNE | | | / | | | Centre Latitude | 5205N | 52° 5' North' | | Centre Longitude | 00011E | 0° 11' East | | Radius of area affected | 001 | 1 nautical miles |
| | CRANE OPERATING WITHIN RADIUS 0.15 NM POSITION 520442N 0001124E ( 2.2 NM SOUTH EAST DUXFORD AERODROME ) UP TO 109FT ABOVE GROUND LEVEL / 235FT ABOVE MEAN SEA LEVEL |
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