| Significance | Code | Meaning |
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| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | AZ | Aerodrome traffic zone (ATZ) | | | AH | hours of service | | | / | | | 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 | | | E | En-Route information | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 025 | 2500 feet QNE | | | / | | | Centre Latitude | 5140N | 51° 40' North' | | Centre Longitude | 00203W | 2° 3' West | | Radius of area affected | 002 | 2 nautical miles |
| | REVISED KEMBLE AIR TRAFFIC ZONE HOURS : 0900-1700 AND BY ARRANGEMENT.UK AERONAUTICAL INFORMATION PUBLICATION EGBP AERODROME 2.17 REFERS. |
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