KLM777 From Netherlands, joined Dec 2003, 372 posts, RR: 0
Reply 2, posted (11 years 1 month 2 weeks 2 hours ago) and read 3780 times:
Could it be a early 747 used for testing on behalf of the certification?? If you look at the top of the tail, there is a sensor (I guess) hanging wired to the tail, probably for registration, so I guess this is test flight...
OPNLguy From , joined Dec 1969, posts, RR:
Reply 5, posted (11 years 1 month 2 weeks 2 hours ago) and read 3701 times:
>>>Can anyone tell me about this incident? Does anyone know the story behind it or anything?
The fact that there is a piece of instrumentation trailing off the end of the vertical stabilizer tells me that this was still Boeing's aircraft when the footage was shot, and as such, was probably a "Vmu" test where they -intentionally- drag the tail to see at what speed the aircraft will fly itself off. The aircraft in question was not yet in passenger service.
DAirbus From United States of America, joined Nov 2003, 596 posts, RR: 2
Reply 7, posted (11 years 1 month 2 weeks ago) and read 3458 times:
Definitely a certification test. They attached a huge piece of wood to the aircraft and deliberately dragged the tail to determine Vmu as someone already mentioned. The 777 had a similar test when it was being certified.
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