Author: United States Congress

Publisher: Forgotten Books

Published: 2016-12-28

Total Pages: 146

ISBN-13: 9781334803482

Excerpt from Advanced Aircraft Technology and Federal Aviation Administration Aircraft Certification: Hearing Before the Subcommittee on Aviation of the Committee on Public Works and Transportation, House of Representatives, One Hundred Third Congress, First Session; October 20, 1993 The 777 has been almost totally designed with computer software and computerized displays of parts. Components. And sections of the aircraft. Down to individual rivets and screws. Previous aircraft have been largely developed through the use of mock-ups and prototypes. For the 777. There is no mock-up. Prototype. Or assembly step between the computerized design and the first aircraft built. It is expected that all future aircraft will be designed in this fashion because of the cost savings and improved design. While this aircraft will incorporate a number Of new technologies. The principal issue raised by this aircraft is whether it should be certified for extended range Operations substantially on the basis of laboratory simulation. With the advent of large twin engine aircraft. The faa has developed a process to approve flights over water up to three hours away from an airport. Without this process. Only flights of up to one hour from an airport are permitted. The process requires an operator to make modifications to the engines: demonstrate very high engine reliability rates, incorporate specialized pilot training; and have a maintenance program that takes account of extended range Operational requirements. To date, Operators have had to demonstrate a history of performance before getting approval for extended over-water Operations. It has typically taken a year or two to accumulate the requisite amount of engine hours needed to demonstrate an acceptable level of reliability. In designing the 777, Boeing wants to have the aircraft certified for extended range operations from day one, without being required to demonstrate a history of performance after the aircraft is in service. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.