NTSB Identification: CHI82FA135
14 CFR Part 91: General Aviation
Accident occurred Sunday, April 25, 1982 in SEBRING, OH
Probable Cause Approval Date: 04/25/1983
Aircraft: DAUNTLESS D52, registration: N1422D
Injuries: 2 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.

BOTH WINGS SEPARATED DURING AN EXPERIMENTAL TEST FLIGHT OF THE MOTORIZED GLIDER. THE PLT HAD INDICATED THE TESTS WOULD INCLUDE CLIMBING TO A SAFE ALTITUDE & DOING A FEW POWER-OFF SHALLOW GLIDES TO SEE IF THERE WAS ANY INDICATION OF FLUTTER AT PERHAPS MAX SPEED OF INDICATED 130-135 MPH.

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

WING,SPAR..OVERLOAD

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

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

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

WING,SPAR..FAILURE,TOTAL

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

WING,SPAR..SEPARATION

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