| Significance | Code | Meaning |
|---|
| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | IC | ILS | | | LS | Subject to interruption | | | / | | | Traffic | I | IFR 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 | 5145N | 51° 45' North' | | Centre Longitude | 00135W | 1° 35' West | | Radius of area affected | 005 | 5 nautical miles |
| | ILS RUNWAY 25 CH22Y FREQUENCY 108.550MHZ 1.AIRCREW MAY EXPERIENCE GP FLAGS WHEN CLOSING THE GP FOM THE LEFT OF 8 DEG LEFT OF CENTRE LINE 2.ILS AUTO-COUPLED APPROACHES PERMITTED TO CATEGORY 1 DH.PILOTS MAY EXPERIENCE GP FLUCTUATIONS.3.DISTANCE MEASURING EQUIPMENT FALSE RANGES MAY OCCUR BTN 17NM AND 25NM WHEN LEFT OF CENTRE LINE. |
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