CORONA, CA, USA
N5303U
BARRY ZIELINSKI SNS 8 HIPERLT
N5303U, OWNED & OPERATED BY THE AMATEUR ACFT BUILDER SUSTAINED AN INFLT STRUCTUAL FAILURE OF THE LT BOTTOM WING & CRASHED 6 MI EAST OF CORONA, CA. THE ULTRALIGHT TYPE ACFT WAS DESTROYED AND THE PLT FATALLY INJURED. INVESTIGATION REVEALED THAT WING SPAR FAILURE OCCURRED IN NEGATIVE OVERLOAD WHEN DESIGN STRESS LIMITS WERE EXCEEDED. THE PLT DEPLOYED A SAFETY PARACHUTE BUT THE ALUMINUM FITTING ATTACHING THE CHUTE TO THE ACFT FAILED DUE TO OVERLOADS. THE STRENGTH OF THIS FITTING WAS FOUND INADEQUATE FOR THE FORCES EXPECTED.
Source: NTSB Aviation Accident Database
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