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Report: B747 overspeed flap damage in post-maintenance flight
6 February 2004

The Irish AAIU published their investigation report regarding the May 2000 incident involving a Boeing 747 that suffered flap system damage due to overspeed. The plane was on a check flight following a C-check with both static drain ports left open. This resulted in both airspeed indicators under-reading by a significant amount. (AAIU)