| Significance | Code | Meaning |
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| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | RO | Overflying restriction | | | XX | miscellaneous plain language | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | N | For immediate attention of aircraft operators | | | B | For inclusion in Preflight Infomation Bulletins | | | O | Operationally significant for IFR flights | | | / | | | Scope | W | Navigational Warning | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 025 | 2500 feet QNE | | | / | | | Centre Latitude | 5120N | 51° 20' North' | | Centre Longitude | 00058W | 0° 58' West | | Radius of area affected | 003 | 3 nautical miles |
| | MILITARY AIRCRAFT SHALL AVOID AN EQUESTRIAN EVENT WITHIN 2NM RADIUS OF POSITION 512027N 0005748W ( HART,HAMPSHIRE ) LOW FLYING THAMES VALLEY AVOIDANCE AREA DAY SURFACE TO 2000FT ABOVE GROUND LEVEL.26 / 08 / 273 / LFC |
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