| Significance | Code | Meaning |
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| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | WE | Exercises | | | LW | will take place | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | 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 | 026 | 2600 feet QNE | | | / | | | Centre Latitude | 5403N | 54° 3' North' | | Centre Longitude | 00248W | 2° 48' West | | Radius of area affected | 003 | 3 nautical miles |
| | MULTIPLE HEL OPERATING WITHOUT LIGHT WITHIN 2NM RADIUS : 540300N 0024819W ( LANCASTER ). FOR INFO 01912 395390 EXT 2369.AR-2024-7865 / AU3. |
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