| Significance | Code | Meaning |
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| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | LH | High intensity flashing lights | | | XX | miscellaneous plain language | | | / | | | Traffic | I | IFR traffic affected | | | / | | | Purpose | 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 | 5137N | 51° 37' North' | | Centre Longitude | 00106W | 1° 6' West | | Radius of area affected | 005 | 5 nautical miles |
| | RUNWAY LIGHT INTENSITY HIGH RUNWAY 01 / 19 AFFECTING NIGHT VISION GOGGLE USERS DUE MOBILE AIRFIELD LIGHT MONITORING SYSTEM IN USE.AIRCRAFT TO OPERATING FROM EASTERN GRASS,CONTACT AIR TRAFFIC CONTROL FOR INFO. |
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