Aviation safety investigations & reports

Cessna 150-G, VH-KOK, Redcliffe Aerodrome QLD, 25 July 1989

Investigation number:
Status: Completed
Investigation completed


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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    
State: Queensland    
Release date: 23 February 1990   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

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