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Accident investigation report completed and information captured
Narrative: THE PLT WAS EXECUTING A HIGH SPEED PASS OVER THE RWY AT ABOUT 250 FT AGL. THE PLT THEN BEGAN A RAPID PULL-UP & BOTH WINGS SEPARATED JUST OUTBOARD OF THE ENG NACELLES. RECONSTRUCTION OF THE SEQUENCE FROM A VIDEOTAPE REVEALED THAT THE ACFT'S SPEED AT THE TIME OF THE WING SEPARATIONS WAS 220 KTS. VNE FOR THE ACFT IS 193 KTS. IT WAS CALCULATED THAT, AT 220 KTS & AN 8 DEG NOSE-UP PITCH, THE 'G' LOAD AT THE TIME OF THE WING SEPARATIONS WOULD HAVE BEEN 8.3 G'S.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
IN-FLIGHT PLANNING/DECISION..IMPROPER..PILOT IN COMMAND OVERCONFIDENCE IN AIRCRAFT'S ABILITY..PILOT IN COMMAND AIRSPEED..EXCEEDED..PILOT IN COMMAND WING..OVERLOAD DESIGN STRESS LIMITS OF AIRCRAFT..EXCEEDED..PILOT IN COMMAND