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ASN Wikibase Occurrence # 166028
Last updated: 27 June 2017
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Date:06-MAY-2014
Time:10:52 LT
Type:Silhouette image of generic A332 model; specific model in this crash may look slightly different
Airbus A330-223
Owner/operator:Vietnam Airlines
Registration: VN-A371
C/n / msn: 275
Fatalities:Fatalities: 0 / Occupants: 193
Other fatalities:0
Airplane damage: Minor
Category:Incident
Location:Melbourne/Tullamarine Airport (YMML), Victoria -   Australia
Phase: Take off
Nature:International Scheduled Passenger
Departure airport:Melbourne/Tullamarine (MEL/YMML)
Destination airport:Ho Chi Minh City-Tan Son Nhat Int'l (SGN/VVTS)
Investigating agency: Australian Transport Safety Bureau (ATSB) - Australia
Narrative:
An Airbus A330 aircraft, operated by Vietnam Airlines and powered by Pratt and Whitney PW4168A engines, was conducting a regular passenger service from Melbourne, Victoria to Ho Chi Minh City, Vietnam. During the take-off roll, the crew received indications that the right engine had failed. The flight crew responded by discontinuing the take off. There were no injuries to passengers or crew.

Examination of the right engine determined that it had sustained an uncontained failure of the stage four low pressure turbine. Fragments of the turbine exited the engine via perforations in the low-pressure turbine front case but were retained within the engine cowls. Turbine debris exiting the exhaust duct damaged the right inboard and outboard flaps, flap fairings and a spoiler.

The ATSB found that the engine failed due to high-cycle fatigue cracking and the fracture of a single stage four low-pressure turbine blade. Release of the fractured blade resulted in the subsequent failure of the turbine. The fatigue crack initiation point on the remaining blade stub of the fractured blade was obscured by damage from rotational contact that occurred during the engine failure sequence. This prevented the ATSB from determining whether any pre-existing material anomaly or damage contributed to the crack initiation.

No similar failures in Pratt and Whitney PW4168A engines were identified.

Sources:

http://www.atsb.gov.au/publications/investigation_reports/2014/aair/ao-2014-081/

Accident investigation:
cover
investigating agency: Australian Transport Safety Bureau (ATSB) - Australia
status: Final
number: AO-2014-081
released:1 June 2017
duration of investigation: 3 years
download report: AO-2014-081

Revision history:

Date/timeContributorUpdates
06-May-2014 07:25 gerard57 Added
06-May-2014 17:22 gerard57 Updated [Registration, Operator, Source]
21-May-2014 03:31 Geno Updated [Time, Aircraft type, Cn, Total fatalities, Location, Departure airport, Destination airport, Source, Narrative]
01-Jun-2017 11:26 harro Updated [Location, Destination airport, Source, Narrative]
01-Jun-2017 12:50 harro Updated [Operator, Damage]

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