| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | WO | Laser emissions | | | LW | will take place | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | M | Miscellaneous | | | / | | | Scope | A | Aerodrome information | | | W | Navigational Warning | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 999 | Unlimited | | | / | | | Centre Latitude | 5139N | 51° 39' North' | | Centre Longitude | 00018W | 0° 18' West | | Radius of area affected | 002 | 2 nautical miles |
| | LASERS,FIREWORKS WITHIN 1NM RADIUS OF 513919N 0001827W ( ELSTREE ). FIREWORKS UP TO 250FT ABOVE GROUND LEVEL.FOR INFO 07412 670371.AR-2026-9905 / 01. |
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