| 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 | 5405N | 54° 5' North' | | Centre Longitude | 00437W | 4° 37' West | | Radius of area affected | 005 | 5 nautical miles |
| | AERODROME CLOSURES 01-03 0700-0735 07-08 1800-1835 09 0730-0805 AND 1000-1035 10-11 0700-0735 15-16 1800-1835 18-19 0700-0735 23-24 1800-1835 26 0700-0735 27 1800-1835 ALL OTHER TIMES AS PUBLISHED.LAST RUNWAY MOVEMENT 15 MINUTES BEFORE EVERY CLOSED TIME. |
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