| Significance | Code | Meaning |
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| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | FA | Aerodrome | | | LC | closed | | | / | | | 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 | | | / | | | From flight level | 000 | Surface | | | / | | | Up to flight level | 999 | Unlimited | | | / | | | Centre Latitude | 5129N | 51° 29' North' | | Centre Longitude | 00028W | 0° 28' West | | Radius of area affected | 005 | 5 nautical miles |
| | AERODROME CLOSED FOR RUNWAY MAINTENANCE.FOR FLT PLANNING,AIRLINES ARE REQUESTED NOT TO USE AERODROME AS AN ALTN.START OF RUNWAY CLOSED WILL BE DELAYED UNTIL SCHEDULED MOVEMENTS ARE COMPLETED.MOVEMENTS DELAYED INTO THE NIGHT QUOTA PERIOD ARE STILL SUBJECT TO AERODROME AUTHORITY APPROVAL.FOR INFO CONTACT AERODROME DUTY MANAGER 020 8745 7373 |
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