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Shortly after the pilot applied full power and commenced the take-off roll there was a loud bang and the aircraft yawed violently. The pilot closed the throttle and stopped the aircraft. An inspection disclosed that one complete propeller blade was missing. A detailed inspection of the propeller blade indicated that the blade had failed in the area of the threads at the root of the blade. The fracture surfaces indicated that a fatigue crack had started approximately 500 hours prior to the final flight and that the blade had failed because the remaining unaffected metal could no longer carry the loads involved. The inspection was unable to find any reason for the origin of the fatigue crack. The cracking occurred in an area of the blade which is not visible when the blade is fitted to an aircraft, consequently the cracking could not be disclosed during either preflight or periodic maintenance inspections carried out in accordance with the maintenance system in force at the time of the failure. The blades are normally inspected for cracks at each overhaul. An overhaul is carried out after the blades have been in service for 1500 hours. The blade that failed had been in service for 1052 hours.

Download Final Report
[ Download PDF: 23KB]
 
 
 
 
General details
Date: 18 June 1988 Investigation status: Completed 
Time: 1520 Investigation type: Occurrence Investigation 
Location:Kambalda West Occurrence type:Propeller/rotor malfunction 
State: Western Australia Occurrence class: Technical 
Release date: 21 February 1989 Occurrence category: Accident 
Report status: Final Highest injury level: None 
 
Aircraft details
Aircraft manufacturer: Cessna Aircraft Company 
Aircraft model: 182 
Aircraft registration: VH-TSH 
Serial number: 18254356 
Type of operation: Private 
Damage to aircraft: Substantial 
Departure point:Kambalda West WA
Departure time:1520
Destination:Kambalda West WA
 
 
 
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