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While conducting a pleasure flight the aircraft right rear landing wire failed. The pilot returned to TYABB and landed normally. The landing wire examination found that the wire failed in fatigue initiating from two subsurface defects in approximately the middle of the wire length. A sample taken some 40 mm from the fracture surface contained intermetallic stringers reducing the integrity of the material. Size of the stringers was consistent with the size of the subsurface defects. The analysis indentified the stringers to be an aluminium based intermetallic, possibly from the refractory material used in production of the material. The material composition and microstructure was typical of a drawn and rolled 316 stainless steel. The manufacturer advised the wire was made of 316S16 steel.
Download Final Report
[ Download PDF: 12KB]
 
 
 
 
General details
Date: 01 November 1992 Investigation status: Completed 
Time: 15:00 EST Investigation type: Occurrence Investigation 
 Occurrence type:Diversion/return 
Release date: 18 June 1993 Occurrence category: Incident 
Report status: Final  
 
Aircraft details
Aircraft manufacturer: de Havilland Aircraft Pty Ltd 
Aircraft model: DH-82A 
Aircraft registration: VH-DFJ 
Sector: Piston 
Damage to aircraft: Minor 
Departure point:TYABB, VIC
Destination:POINT COOK, VIC
 
 
 
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Last update 07 July 2015