Aviation safety investigations & reports

Engine malfunction and in-flight shutdown involving Boeing 777, A6-EGA, 650 km NW of Adelaide, SA, on 7 September 2016

Investigation number:
AO-2016-113
Status: Completed
Investigation completed

Final Report

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On 7 September 2016, an Emirates Boeing 777-31HER aircraft, registered A6-EGA, was operating a scheduled passenger flight from Dubai, United Arab Emirates, to Brisbane, Queensland. On board were 22 crewmembers and 308 passengers.

At about 1916 Central Standard Time, the left engine oil quantity started to decrease from 16.4 quarts, stabilising at 2 quarts at 1927, when the aircraft was about 650 km north-west of Adelaide, South Australia, and at flight level (FL) 353.  The flight crew contacted company engineering and operations staff and advised them of the situation.

The flight crew received a left engine low oil engine-indicating and crew-alerting system (EICAS) message and conducted the associated non-normal checklist. At about 1951, the flight crew shut the left engine down.

The flight crew contacted air traffic control, declared a PAN and conducted a diversion to Adelaide Airport, which was the nearest suitable airport. The flight crew commenced a gradual descent to FL 270, and conducted an area navigation (RNAV) approach to runway 05 at Adelaide. The aircraft landed without incident. There was no damage to the aircraft or injuries to crew or passengers.

A subsequent engineering inspection found the left oil supply line to bearings numbers 4 and 5 had fractured and the associated clamp was broken. The operator performed a fleet-wide inspection and found no leaks or cracks on any other engine.

This incident provides an excellent example of effective crew resource management techniques when faced with an abnormal situation. Additionally, regular proficiency checks in the simulator including scenarios of a single engine failure allow flight crew to respond appropriately in the event of such an occurrence in flight.

Aviation Short Investigations Bulletin - Issue 56

Download Final Report
[Download  PDF: 157KB]
 
 
Alternate: [Download  DOCX: 790KB]
 

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General details
Date: 07 September 2016   Investigation status: Completed  
Time: 19:50 CST   Investigation level: Short - click for an explanation of investigation levels  
Location   (show map): Ceduna Aerodrome, north 135 km (RUSAD (IFR))    
State: South Australia   Occurrence type: Engine failure or malfunction  
Release date: 17 January 2017   Occurrence category: Incident  
Report status: Final   Highest injury level: None  

Aircraft details

Aircraft details
Aircraft manufacturer The Boeing Company  
Aircraft model 777-31HER  
Aircraft registration A6-EGA  
Serial number 38984  
Operator Emirates  
Type of operation Air Transport High Capacity  
Sector Jet  
Damage to aircraft Nil  
Departure point Dubai, UAE  
Destination Brisbane, Qld  
Last update 14 November 2018