Incident Overview
Date: Friday 23 February 1973
Aircraft Type: Douglas DC-3F
Owner/operator: Southern Air Super
Registration Number: ZK-AOI
Location: Seddon –
ÿ New Zealand
Phase of Flight: Manoeuvring (airshow, firefighting, ag.ops.)
Status: Destroyed, written off
Casualties: Fatalities: 1 / Occupants: 1
Component Affected: Lower centre wing wraparound and internal doublersLower centre wing wraparound and internal doublers
Category: Accident
A DC-3 aircraft crashed into a hillside after the separation of the right wing. The accident was caused by a loss of structural strength due to fatigue cracks in the lower centre wing wraparound and internal doublers inboard of Sta. 142, leading to the initiation and propagation of RH wing cracks.A DC-3 aircraft crashed into a hillside after the separation of the right wing. The accident was caused by a loss of structural strength due to fatigue cracks in the lower centre wing wraparound and internal doublers inboard of Sta. 142, leading to the initiation and propagation of RH wing cracks.
Description
The DC-3 crashed into a hillside after the in-flight separation of the right wing. ASSIGNED CAUSE: “The accident was caused by in-flight separation of the starboard wing due to a loss of structural strength brought about by extensive fatigue cracks in the lower centre wing wraparound and internal doublers inboard of Sta. 142, initiation and propagation to failure of the RH wing cracks being due to consistent overstress.”
Primary Cause
Fatigue cracks in the lower centre wing wraparound and internal doublers inboard of Sta. 142Fatigue cracks in the lower centre wing wraparound and internal doublers inboard of Sta. 142Share on:
