Jon Ostrower - Flight Blogger

Boeing begins 747-8I flutter trials, 787 advances toward ETOPS

Boeing began flutter testing Friday to evaluate the aeroelastic stability of the first 747-8 Intercontinental, as the aircraft advances toward its type inspection authorization (TIA), which will formally kick off the Federal Aviation Administration's involvement in certification flight tests, the company confirms.


Matt Cawby's KPAE blog captured RC001, Boeing's first 747-8I, at 32,000ft in the flutter track high above Washington state on its first day of flutter testing. Company sources say the aircraft achieved a Mach .96 cruise at 35,000ft during the first day of testing. According to  audio of the test, the outboard aileron modal suppression system (OAMS) was tested on RC001, which was absent during the aircraft's first flight.

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