| Significance | Code | Meaning |
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| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | SE | Flight information service (FIS) | | | AH | hours of service | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | B | For inclusion in Preflight Infomation Bulletins | | | O | Operationally significant for IFR flights | | | / | | | Scope | E | En-Route information | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 100 | 10000 feet QNE | | | / | | | Centre Latitude | 5239N | 52° 39' North' | | Centre Longitude | 00033E | 0° 33' East | | Radius of area affected | 030 | 30 nautical miles |
| | MARHAM LOWER AIRSPACE RADAR SERVICE HOURS 29 JUN 1030-1615 30 JUN 0700-1645 01 JUL 0700-1645 02 JUL 0900-1600 03 JUL 0800-1100 |
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