| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | AZ | Aerodrome traffic zone (ATZ) | | | CD | deactivated | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | N | For immediate attention of aircraft operators | | | B | For inclusion in Preflight Infomation Bulletins | | | O | Operationally significant for IFR flights | | | / | | | Scope | A | Aerodrome information | | | E | En-Route information | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 045 | 4500 feet QNE | | | / | | | Centre Latitude | 5307N | 53° 7' North' | | Centre Longitude | 00301W | 3° 1' West | | Radius of area affected | 009 | 9 nautical miles |
| | HAWARDEN AIR TRAFFIC ZONE AND RADIO MANDATORY ZONES 1-3 DEACTIVATED.AERODROME AND AIR TRAFFIC SERVICES SERVICES CLOSED DUE ESSENTIAL AERODROME ELECTRONIC WORKS |
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