Aviation safety investigations & reports

Total power loss - Cessna 208 aircraft, VH-UMV near Cairns Airport, Queensland, 31 December 2009

Investigation number:
AO-2010-005
Status: Completed
Investigation completed

Summary

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On 31 December 2009, a Cessna Aircraft Company model 208, registered VH-UMV, was engaged in parachuting operations from Cairns Airport, Queensland. While climbing through 12,500 ft in preparation for a parachute drop, the engine failed. The parachutists exited the aircraft and the pilot completed a glide approach and uneventful landing at Cairns Airport.

The failure of the Pratt and Whitney PT6A-114 engine was probably precipitated by fracture of the compressor turbine blades. Federal Aviation Administration (FAA) parts manufacturing approval information indicated that part number T-102401-01 compressor turbine blades that had been installed in the engine during the most recent overhaul were not approved for the PT6A-114 model.

As a result of this occurrence, the Civil Aviation Safety Authority (CASA) released Airworthiness Bulletin AWB 72-005, alerting all operators and maintainers of PT6A engines, of the potential for installation of these compressor turbine blades in unapproved PT6A engine variants, and to raise awareness of the restrictions placed on the use of approved after-market blades.

Download Final Report
[Download  PDF: 1.19MB]
 
 
Alternate: [Download  DOC: 1.79MB]
 
General details
Date: 31 December 2009   Investigation status: Completed  
Time: 1030 EST    
Location   (show map): near Cairns Airport   Investigation type: Occurrence Investigation  
State: Queensland   Occurrence type: Engine failure or malfunction  
Release date: 13 September 2011   Occurrence class: Technical  
Report status: Final   Occurrence category: Serious Incident  
  Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer Cessna Aircraft Company  
Aircraft model 208  
Aircraft registration VH-UMV  
Serial number 20800077  
Type of operation Sports Aviation  
Damage to aircraft Nil  
Departure point Cairns, Qld  
Destination Cairns, Qld  
Last update 14 November 2018