(19)

(11)

EP 0 403 501 A1

(12)

(43) Date of publication: 27.12.1990 Bulletin 1990/52 (21) Application number: 89902486.0 (22) Date of filing: 08.12.1988

(51) International Patent Classification (IPC):  B64C 25/ 04( . ) B64C 25/ 02( . ) (86) International application number: PCT/US1988/004319 (87) International publication number: WO 1990/006257 (14.06.1990 Gazette 1990/14)

(84) Designated Contracting States: DE FR GB IT NL SE (71) Applicant: Bell Helicopter Textron Inc. Fort Worth Texas 76053 (US)	(72) Inventors: DAVIS, Charles, E. Arlington, TX 76012 (US) DUPPSTADT, J., Robert Bedford, TX 76021 (US) (74) Representative: UEXKÜLL & STOLBERG  Patentanwälte Beselerstrasse 4 D-22607 Hamburg D-22607 Hamburg (DE)