Aviation safety investigations & reports

Cessna 182-Q, VH-UMR, 30 km East of Mainoru NT, 28 November 1990

Investigation number:
Status: Completed
Investigation completed


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The pilot stated that while in the cruise at 3500 feet, approximately ten minutes after take off, the engine began to lose power and run roughly. Remembering that he had flown over a cleared area a short time before, the pilot elected to attempt to return to this clearing. During the descent he noticed that even with the throttle closed a rough vibration was being transmitted through the airframe. A decision was then taken to make a power-off landing. Approximately ten metres into the landing roll the right main wheel assembly separated from the strut when it impacted a small gully. The aircraft then came to halt without further incident. The investigation revealed that the piston assembly in the number five cylinder had failed due to prolonged and severe detonation. The exact cause of the detonation was not determined.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 28 November 1990   Investigation status: Completed  
Time: 1110    
Location   (show map): 30 km East of Mainoru    
State: Northern Territory    
Release date: 11 June 1991   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Cessna Aircraft Company  
Aircraft model 182  
Aircraft registration VH-UMR  
Serial number 18265822  
Type of operation Air Transport Low Capacity  
Damage to aircraft Substantial  
Departure point Bulman NT  
Departure time N/A  
Destination Urapunga NT