Aviation safety investigations & reports

Abnormal engine indications - Boeing 767-338, VH-OGO, near Perth Airport WA, 12 November 2010

Investigation number:
AO-2010-093
Status: Completed
Investigation completed

Summary

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On 12 November 2010, a Qantas Airways operated, Boeing Company 767-338 aircraft, registered VH-OGO, departed Perth Airport, Western Australia, on a scheduled passenger flight to Melbourne, Victoria. During climb the flight crew heard a popping sound followed by vibration from the left engine. The vibration decreased when the engine power lever was retarded to the flight idle position. The crew declared a PAN and requested a return to Perth. Air traffic control alerted emergency services who were in attendance when the aircraft landed.

An initial examination of the aircraft revealed pieces of metal in the engine tail pipe and damage to the low pressure turbine (LPT) module. The engine was replaced and the aircraft returned to service.

The engine manufacturer attributed the failure to the LPT stage 3 nozzle. A new nozzle design was released 19 January 2011. The current repair limits and repair procedures are also being re-evaluated by the manufacturer.

The aircraft operator advises that; as many engines have undergone their last full refurbishment before fleet retirement, the operator will replace the nozzles on an attrition basis. In the interim, the operator has introduced additional inspections for pre service bulleting 72-1354 LPT stage 3 nozzles that should detect any signs of airfoil cracking well in advance of a potential operational event.

Download Final Report
[Download  PDF: 4.28MB]
 
 
 
General details
Date: 12 November 2010   Investigation status: Completed  
Time: 1526 WST   Investigation level: Short - click for an explanation of investigation levels  
Location   (show map): near Perth Airport    
State: Western Australia   Occurrence type: Engine failure or malfunction  
Release date: 12 September 2011   Occurrence class: Technical  
Report status: Final   Occurrence category: Incident  
  Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer The Boeing Company  
Aircraft model 767  
Aircraft registration VH-OGO  
Serial number 25577  
Type of operation Air Transport High Capacity  
Damage to aircraft Nil  
Departure point Perth, WA  
Destination Melbourne, Vic.  
Last update 14 November 2018