Aviation safety investigations & reports

Cessna A185 E, VH-RKZ, Warkworth NSW, 2 March 1986

Investigation number:
Status: Completed
Investigation completed


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During the daily inspection prior to a series of glider towing operations, the pilot noticed that the brake linings were worn. During the landing roll following the third of these operations, the right brake failed and the aircraft ground looped before coming to rest. The brake had failed following the loss of hydraulic fluid from the seal for the brake caliper piston. This was caused by excessive piston travel, associated with severely worn brake linings. When the assembly was dismantled, it was found that the linings had worn completely off the backing plate, and those on the pressure plate were only 1.1 millimetres in depth. Both brake discs were pitted from the effects of corrosion, which would have caused the excessive wear in the linings.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 02 March 1986   Investigation status: Completed  
Time: 1130    
Location: Warkworth    
State: New South Wales   Occurrence type: Loss of control  
Release date: 26 March 1986   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Cessna Aircraft Company  
Aircraft model 185  
Aircraft registration VH-RKZ  
Type of operation Private  
Damage to aircraft Substantial  
Departure point Warkworth NSW  
Departure time 1125  
Destination Warkworth NSW