| 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 | 005 | 500 feet QNE | | | / | | | Centre Latitude | 5137N | 51° 37' North' | | Centre Longitude | 00017E | 0° 17' East | | Radius of area affected | 002 | 2 nautical miles |
| | UNMANNED CAPTIVE BALLOON IN LOW FLYING AREA THAMES VALLEY AVOIDANCE AREA WITHIN 1NM RADIUS OF POSITION 513655N 0001722E ( BRENTWOOD,ESSEX ) MAXIMUM HEIGHT 200FT ABOVE GROUND LEVEL.26 / 04 / 133 / LFTP CONTACT 07415 711454 |
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