| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | XX | Miscellaneous | | | 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 | A | Aerodrome information | | | W | Navigational Warning | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 204 | 20400 feet QNE | | | / | | | Centre Latitude | 5056N | 50° 56' North' | | Centre Longitude | 00239W | 2° 39' West | | Radius of area affected | 003 | 3 nautical miles |
| | GROUND TRANSPONDER TESTING.TRANSPONDER WILL SQUAWK 7776.MODE S TEST TRANSPONDER LOCATED AT : 505622N 0023900W ( YEOVIL ). POSS FALSE AIRCRAFT INDICATIONS MAY OCCUR WITHIN 2NM RADIUS.WILL INDICATE BTN 600FT BELOW SURFACE LEVEL UP TO 20000FT ABOVE GROUND LEVEL.MAY INDICATE A SPEED OF 300KTS.DIRECT OVERFLIGHT BELOW 100FT SHOULD BE AVOIDED.FOR INFO 01935 703050 / 0770 2621575.AR-2026-9902 / 01. |
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