From: firstname.lastname@example.org (Woodhams) Organization: University of Auckland Date: 22 Jun 94 16:57:50 References: 1 2 Followups: 1
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Stephen L Nicoud <stephen.nicoud@Boeing.Com> writes: > Successful completion of the testing program is expected to lead to the > certification of Pratt & Whitney-powered 777s in April of next year, with > delivery of the first customer airplane to United Airlines scheduled for > May 15, 1995. Certification of GE-powered 777s is expected in August 1995, > and certification of Rolls-Royce-powered 777s anticipated in January 1996. Why does it take so long to certify the plane with the different engines? (10 months to certify the whole plane plus P&W engines, another 9 months after that before the RR engines are certified.) I would have guessed that 80% of the certification testing would be independent of which engine was used. Michael W.