| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | WC | Captive balloon/kite flying | | | LW | will take place | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | M | Miscellaneous | | | / | | | Scope | W | Navigational Warning | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 017 | 1700 feet QNE | | | / | | | Centre Latitude | 5148N | 51° 48' North' | | Centre Longitude | 00350W | 3° 50' West | | Radius of area affected | 002 | 2 nautical miles |
| | CAPTIVE UNMANNED HELIUM BALLOON WITHIN 1NM RADIUS OF 514747N 0035010W ( CWMLLYNFELL ). MAXIMUM HEIGHT 492FT ABOVE GROUND LEVEL.FOR INFO 07710 701229.AR-2026-150 / 01. |
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