| Significance | Code | Meaning |
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| FIR | EGTT | London FIR | | | / | | | Qualifiers | Q | | | | FA | Aerodrome | | | AH | hours of service | | | / | | | Traffic | I | IFR traffic affected | | | V | VFR traffic affected | | | / | | | Purpose | 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 | 5150N | 51° 50' North' | | Centre Longitude | 00458W | 4° 58' West | | Radius of area affected | 005 | 5 nautical miles |
| | HAVERFORDWEST AERODROME ADMINISTRATION AND HAVERFORDWEST RADIO HOURS OF OPERATION UPDATED TO READ : 0830-1700 ( 0730-1600 ), 24 HOURS WITH PRIOR ARRANGEMENT UK AERONAUTICAL INFORMATION PUBLICATION EGFE AERODROME 2.3 AND AERODROME 2.18 REFERS. |
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