| Significance | Code | Meaning |
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| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | PO | Obstacle clearance altitude | | | CH | changed | | | / | | | 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 | 5154N | 51° 54' North' | | Centre Longitude | 00210W | 2° 10' West | | Radius of area affected | 005 | 5 nautical miles |
| | INSTRUMENT APPROACH CHART ILS / DISTANCE MEASURING EQUIPMENT / NON-DIRECTIONAL BEACON ( L ) RUNWAY 26-CATEGORY A OBSTACLE CLEARANCE ALTITUDE ( OBSTACLE CLEARANCE HEIGHT ) INCREASED TO 278 ( 191 ), CATEGORY B OBSTACLE CLEARANCE ALTITUDE ( OBSTACLE CLEARANCE HEIGHT ) INCREASED TO 285 ( 198 ), CATEGORY C OBSTACLE CLEARANCE ALTITUDE ( OBSTACLE CLEARANCE HEIGHT ) INCREASED TO 294 ( 207 ). UK AERONAUTICAL INFORMATION PUBLICATION AERODROME 2.EGBJ-8-4 REFERS.) |
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