Boeing 747-8F: serious buffet problems in flaps...

[Stratofreighter]

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DATE:24/03/10

SOURCE:Flightglobal.com

747-8F flap buffet could force landing gear door redesign

By Jon Ostrower

For the last month and a half, Boeing has been investigating a serious buffet in the inboard flaps of the 747-8F, Flightglobal affiliate FlightBlogger reports.

Turbulent air coming off of the outboard landing gear doors, identified as the cause of flap buffet, may have to be redesigned, say programme sources.

RC522 flew on 22 March without the outboard landing gear doors installed, and again 23 March with half of the outboard gear door structure installed, as flight test crews sought to narrow their investigation.