| Significance | Code | Meaning |
|---|
| FIR | EGXX | UK Open FIR | | | / | | | Qualifiers | Q | | | | GW | UNKNOWN CODE | | | XX | miscellaneous plain language | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | B | For inclusion in Preflight Infomation Bulletins | | | O | Operationally significant for IFR flights | | | / | | | Scope | E | En-Route information | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 100 | 10000 feet QNE | | | / | | | Centre Latitude | 5503N | 55° 3' North' | | Centre Longitude | 00234W | 2° 34' West | | Radius of area affected | 034 | 34 nautical miles |
| | GPS SIGNAL JAMMING TRIAL AFFECTING AIRBORNE ELECTRONIC SITUATIONAL AWARENESS DEVICES AND UAS C2 LINKS.JAMMERS LOCATED WITHIN 3NM RADIUS POSITION 550307N 0023330W ( BUTTERBURN ). ACTIVITY MAY AFFECT AIRCRAFT AND AIRBORNE ELECTRONIC SITUATIONAL AWARENESS DEVICES WITHIN 30NM ( ALL DIRECTIONS ) UP TO 10000FT ABOVE MEAN SEA LEVEL.DURING TRIAL GPS REC MAY SUFFER INTERMITTENT / TOTAL FAILURE,OR GIVE INCORRECT POSITION INFO.FOR INFO / CEASE JAMMING 01697 749488 OR 01697 749486.AR-2025-1430 / 01. |
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