02 July 2020

USAF chief sees similarities between challenging KC-46A, C-17 development

by Pat Host

The US Air Force’s (USAF’s) outgoing chief of staff believes the Boeing KC-46A Pegasus aerial refuelling tanker will overcome its troubled early development period to become an essential weapon system as did the Boeing C-17 Globemaster III transport platform.

General David Goldfein said on 1 July during a Brookings Institute event that the C-17 effort had been “a mess” and that the USAF almost lost the programme many times. Doug Birkey, Mitchell Institute for Aerospace Studies executive director, told Janes on 1 July that this was because the C-17 was one of the final aircraft McDonnell Douglas designed and built prior to Boeing acquiring the company in the mid-1990s. It took years to resolve systems integration and basic design elements of the C-17 that needed a lot of work, he said, and that the engineering staff had struggled.

A Boeing KC-46A Pegasus takes off from Yokota Air Base, Japan, on 28 October 2018. General David Goldfein, USAF chief of staff, believes the KC-46A will overcome its troubled development to become an essential platform as did the C-17, which was once threatened to be cancelled early. (US Air Force)

The Government Accountability Office (GAO), in an April 1994 report, described the C-17 programme as troubled almost since its inception and that it had fallen short of original cost, schedule, and performance expectations. The GAO said at the time that C-17 reliability was significantly less than expected and that it could not meet payload and range specifications. The C-17 had immature mission computer software, inadequate built-in test capability, and the inability to perform airdrop missions.

The US Air Force’s (USAF’s) outgoing chief of staff believes the Boeing KC-46A Pegasus aerial refuel...

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