Significance | Code | Meaning |
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FIR | EGTT | London FIR | | / | | Qualifiers | Q | | | RO | Overflying restriction | | XX | miscellaneous plain language | | / | | 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 | W | Navigational Warning | | / | | From flight level | 000 | Surface | | / | | Up to flight level | 020 | 2000 feet QNE | | / | | Centre Latitude | 5114N | 51° 14' North' | Centre Longitude | 00207W | 2° 7' West | Radius of area affected | 001 | 1 nautical miles |
| E BAND HIGH INTENSITY RADIO TRANSMISSION AREA ( HIRTA ) IN LOW FLYING AREA 1A,NIGHT ROTARY REGION 1 AND EG D123 AT POSITION 511354N 0020716W,( EDINGTON,WILTSHIRE ) RADIUS 0.3NM.MAXIMUM HEIGHT 1275FT ABOVE GROUND LEVEL.25 / 01 / 036 / LFC SAFE DISTANCES CIVILIAN AIRCRAFT 0.2617NM 1275 FT ABOVE GROUND LEVEL MILITARY AIRCRAFT SUSCEPTIBILITY VERY LOW 0.0581NM 37 FT ABOVE GROUND LEVEL LOW 0.0671NM 92 FT ABOVE GROUND LEVEL MEDIUM 0.0747NM 138 FT ABOVE GROUND LEVEL HIGH 0.0955NM 264 FT ABOVE GROUND LEVEL PULSE LOW 0.0852NM 202 FT ABOVE GROUND LEVEL PULSE MEDIUM 0.1163NM 391 FT ABOVE GROUND LEVEL PULSE HIGH 0.1787NM 770 FT ABOVE GROUND LEVEL |
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