Aviation safety investigations & reports

Beagle A109, VH-UEM, Streaky Bay SA, 2 August 1987

Investigation number:
Status: Completed
Investigation completed


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After application of full throttle during the takeoff run, a severe vibration developed which rapidly stopped the engine from rotating. When the aircraft came to rest the pilot noted that one of the two propeller blades had cleanly separated from its hub. The hub failed as a result of fatigue cracking which extended around approximately half of its circumference. The cracking originated in the root of the blade retention thread and grew progressively over about 850 flights. The cracking was not visible during normal periodic inspections because the hub had been painted to help prevent corrosion.

Download Final Report
[Download  PDF: 22KB]
General details
Date: 02 August 1987   Investigation status: Completed  
Time: 1600    
Location: Streaky Bay    
State: South Australia   Occurrence type: Propeller/rotor malfunction  
Release date: 16 December 1987   Occurrence category: Accident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Beagle Aircraft Ltd  
Aircraft model A109  
Aircraft registration VH-UEM  
Serial number B 520  
Type of operation Private  
Damage to aircraft Substantial  
Departure point Streaky Bay SA  
Departure time N/A  
Destination Yeelanna SA  
Last update 13 May 2014