| 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 | 006 | 600 feet QNE | | | / | | | Centre Latitude | 5220N | 52° 20' North' | | Centre Longitude | 00046E | 0° 46' East | | Radius of area affected | 001 | 1 nautical miles |
| | E BAND HIGH INTENSITY RADIO TRANSMISSION AREA ( HIRTA ) IN LOW FLYING AREA 5 AND NIGHT ROTARY REGIOIN 4B AT POSITION 522022N 0004537E,( GREEN LANE,SUFFOLK ) RADIUS 0.2NM.MAXIMUM HEIGHT 400FT ABOVE GROUND LEVEL.24 / 11 / 0248 / LFC SAFE DISTANCES CIVILIAN AIRCRAFT 0.1261NM 143FT ABOVE GROUND LEVEL MILITARY AIRCRAFT SUSCEPTIBILITY VERY LOW 0.1139NM 73FT ABOVE GROUND LEVEL LOW 0.1267NM 146FT ABOVE GROUND LEVEL MEDIUM 0.1375NM 208FT ABOVE GROUND LEVEL HIGH 0.1671NM 377FT ABOVE GROUND LEVEL PULSE LOW 0.1132NM 69FT ABOVE GROUND LEVEL PULSE MEDIUM 0.1185NM 99FT ABOVE GROUND LEVEL PULSE HIGH 0.1289NM 159FT ABOVE GROUND LEVEL |
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