NTSB Identification: SEA85FA217.
The docket is stored on NTSB microfiche number 28992.
Accident occurred Wednesday, September 18, 1985 in ORCHARDS, WA
Aircraft: Ercoupe (Eng & Research Corp.) 415-C, registration: N93848
Injuries: 1 Fatal.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE PVT PLT WAS OBSERVED EXECUTING A WINGS LEVEL PULL-UP FROM A DIVE DURING WHICH, THE WITNESS REPORTED, THE WING TIPS BEGAN FLUTTERING. IMMEDIATELY THEREAFTER, BOTH WINGS SEPARATED IN POSITIVE OVERLOAD. VISUAL METEOROLOGICAL CONDITIONS EXISTED IN THE AREA OF THE ACCIDENT AND WINDS WERE LIGHT WITH NO REPORTED TUBULENCE. THERE WAS NO EVIDENCE OF ANY PRE-EXISTING WEAKNESS IN THE SPAR STRUCTURE AT THE SEPARATION POINT. THE CONDITION NECESSITATING THE PLT'S PULL-UP MANEUVER COULD NOT BE DETERMINED.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

WING,SPAR..SEPARATION

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

DESIGN STRESS LIMITS OF AIRCRAFT..EXCEEDED..PILOT IN COMMAND

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