| 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 | 5141N | 51° 41' North' | | Centre Longitude | 00147W | 1° 47' West | | Radius of area affected | 005 | 5 nautical miles |
| | FIRE FIGHTING AND RESCUE CAPABILITY HAS BEEN DOWNGRADED TO REDUCED LEVEL OF SERVICE ( RLS ) FOR C-17,B-1,B-2,B-52,KC-135,KC-46.RLS PROVIDES SUFFICIENT CAPABILITY FOR INITIAL RESPONSE,SCENE ASSESSMENT AND IMPLEMENTATION OF MITIGATION TACTICS.RLS REPRESENTS INCREASED RISK / LOSS POTENTIAL DUE TO LACK OF EMERGENCY RESPONSE CAPABILITY TO PERFORM RESCUE AND SUFFICIENT MITIGATION TACTICS SIMULTANEOUSLY.OBJECTIVES MAY NOT BE SUCCESSFUL DURING SITUATIONS WHERE SIMULTANEOUS RESCUE AND FIRE FIGHTING ACTIVITIES ARE REQUIRED. |
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