747 wing stress test: This can't be true can it?

Date:         30 Mar 97 03:54:25 
From:         "Hans Jakobsson" <hansj@algonet.se>
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I just received a question regarding stress tests on 747s.

Quote:

"Is it true that a 747's wings were pulled upwards until both
wing tips touched. (In some sort of stress test)."

End of quote.

I know that they do all sorts of stress tests but this can hardly be true,
can it? My reference archives don't mention this at all. Sure, the wings
can withstand some stress but this is a bit too heavy, I think.

Could any testing experts please comment on this?

Happy Easter and Best Regards,

Hans Jakobsson

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Hans Jakobsson, Sweden
hansj@algonet.se
http://www.algonet.se/~hansj/index.htm
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