| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | XX | Miscellaneous | | | LW | will take place | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | 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 | 100 | 10000 feet QNE | | | / | | | Centre Latitude | 5357N | 53° 57' North' | | Centre Longitude | 00038E | 0° 38' East | | Radius of area affected | 097 | 97 nautical miles |
| | RADAR CALIBRATION WITHIN AREA BOUNDED BY : 545900N 0012702W-545900N 0022221E-535026N 0031245E-525258N 0023608E-525954N 0002033E-543536N 0012321W-545900N 0012702W ( NORTH SEA ). FOR INFO 07841 750439 / 07456 635944 / 07824 830260.AR-2026-4728 / 02. |
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