(19)

(11)

EP 0 585 305 A1

(12)

(43) Date of publication: 09.03.1994 Bulletin 1994/10 (21) Application number: 92910640.0 (22) Date of filing: 27.05.1992

(51) International Patent Classification (IPC):  B64C 21/ 02( . ) (86) International application number: PCT/GB1992/000956 (87) International publication number: WO 1992/021560 (10.12.1992 Gazette 1992/31)

(84) Designated Contracting States: DE ES FR IT NL SE (30) Priority: 30.05.1991 GB 19910011620 (71) Applicant: SHORT BROTHERS PLC Belfast BT3 9DZ, Northern Ireland (GB)	(72) Inventor: BRANIFF, Mark, Anthony Bangor BT20 3RN (GB) (74) Representative: Moon, Donald Keith  BREWER & SON, Quality House, Quality Court, Chancery Lane London WC2A 1HT London WC2A 1HT (GB)