| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | FA | Aerodrome | | | LT | limitation | | | / | | | 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 | 5222N | 52° 22' North' | | Centre Longitude | 00029E | 0° 29' East | | Radius of area affected | 005 | 5 nautical miles |
| | QUIET HOURS IN EFFECT FOR CHANGE OF COMMAND.AIRCRAFT DEPARTURE ALLOWED.ARR RESTRICTED TO STRAIGHT IN,FULL STOP LANDING ONLY.NO TAXI OPERATIONS OR ENGINE RUNS IN THE VICINITY OF OF BLDG 669.HIGHER HEADQUARTERS PRIORITY MISSIONS ARE EXEMPT FROM RESTRICTIONS. |
|
