| 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 | 5134N | 51° 34' North' | | Centre Longitude | 00042E | 0° 42' East | | Radius of area affected | 005 | 5 nautical miles |
| | INSTRUMENT APPROACH CHARTS-AMEND OBSTACLE CLEARANCE ALTITUDE ( OBSTACLE CLEARANCE HEIGHT ) AS FOLLOWS : AERODROME 2 EGMC 8-3 LOCALISER / DISTANCE MEASURING EQUIPMENT / NON-DIRECTIONAL BEACON ( L ) RUNWAY 05 ( CATEGORY A,B,C ) PROCEDURE OBSTACLE CLEARANCE ALTITUDE ( H ) INCREASED TO 580 ( 525 ) 2 DISTANCE MEASURING EQUIPMENT STEP DOWN FIX NO LONGER APPLIES.AERODROME 2 EGMC 8-4 LOCALISER / DISTANCE MEASURING EQUIPMENT / NON-DIRECTIONAL BEACON ( L ) RUNWAY 05 ( CATEGORY D ) PROCEDURE OBSTACLE CLEARANCE ALTITUDE ( H ) INCREASED TO 580 ( 525 ) 2 DISTANCE MEASURING EQUIPMENT STEP DOWN FIX NO LONGER APPLIES.AERODROME 2 EGMC 8-5 SURVEILLANCE RADAR APPROACH RTR 2NM RUNWAY 05 ( CATEGORY A,B,C ) PROCEDURES OBSTACLE CLEARANCE ALTITUDE ( H ) INCREASED TO 580 ( 525 ) |
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