| Significance | Code | Meaning |
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| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | SP | Approach control service (APP) | | | 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 | 023 | 2300 feet QNE | | | / | | | Centre Latitude | 5150N | 51° 50' North' | | Centre Longitude | 00119W | 1° 19' West | | Radius of area affected | 002 | 2 nautical miles |
| | AIR TRAFFIC SERVICES COMMUNICATION FACILITIES-AMEND OXFORD RADAR HOURS OF OPERATION TO READ : 0730-2000 ( 0630-1900 ). UK AERONAUTICAL INFORMATION PUBLICATION EGTK AERODROME 2.18 REFERS. |
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