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The aircraft had been fitted with a tailwheel conversion prior to being imported from the USA. During a touch and go landing, the aircraft was decelerating in the three point attitude through about 20 knots, when the pilot lost control in a violent swing and wing drop to the right, followed by an immediate reversal to the left. The right maingear had separated from the fuselage during the landing roll. The maingear locating bolt and saddle bolts had been fitted incorrectly and were threadbound, allowing the gear leg to place abnormal loads on the saddle. It failed progressively until final overload failure during this particular landing. The aircraft had flown only 13 hours since being placed on the Australian Register. It was imported with the main gear undisturbed. The progressive mode of failure suggests that evidence of impending failure of the saddle should have been apparent for some considerable time.

Download Final Report
[ Download PDF: 22KB]
General details
Date: 25 July 1989 Investigation status: Completed 
Time: 1030  
Location:Redcliffe Aerodrome Investigation type: Occurrence Investigation 
State: Queensland  
Release date: 23 February 1990  
Report status: Final Occurrence category: Accident 
 Highest injury level: None 
Aircraft details
Aircraft manufacturer: Cessna Aircraft Company 
Aircraft model: 150 
Aircraft registration: VH-KOK 
Serial number: 15066577 
Type of operation: Private 
Damage to aircraft: Substantial 
Departure point:Redcliffe Aerodrome QLD
Departure time:1025
Destination:Redcliffe Aerodrome QLD
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