| Significance | Code | Meaning |
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| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | FF | Fire fighting and rescue | | | CG | downgraded | | | / | | | 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 |
| | AIRCREW BE ADVISED : FIRE CRASH CAPABILITY AMBER 4 VEHICLES / 7600 GALLONS OF AGENT REDUCING THE LEVEL OF SERVICE.RFFS IS A REDUCED LEVEL OF SERVICE FOR NFPA ( NATIONAL FIRE PROTECTION ASSOCIATION ) CATEGORY 8 ( KC-135,C-17,KC-46,B-1,B-2,B-52,767 ). NFPA CATEGORY 9 KC-10,E-4,MD-11,747,777,VC-25 ) AND NFPA CATEGORY 10 ( C5,787-8I ) ARE AT A CRITICAL LEVEL OF SERVICE.NFPA CATEGORY 7 ( RC-135,CV-22,C-130 ) REMAIN OPTIMUM LEVEL OF SERVICE. |
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