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ASN Wikibase Occurrence # 76622
Last updated: 14 October 2019
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Date:30-AUG-2010
Time:23:45 PDT
Type:Silhouette image of generic B744 model; specific model in this crash may look slightly different
Boeing 747-438
Owner/operator:Qantas Airlines
Registration: VH-OJP
C/n / msn: 25545/916
Fatalities:Fatalities: 0 / Occupants: 231
Other fatalities:0
Aircraft damage: Minor
Category:Serious incident
Location:In flight near San Francisco, California -   United States of America
Phase: En route
Nature:International Scheduled Passenger
Departure airport:KSFO
Destination airport:YSSY
Investigating agency: ATSB
Narrative:
On 30 August 2010 at approximately 2330 Pacific Daylight Time, a Qantas Boeing 747-438 aircraft, registered VH-OJP, departed San Francisco International Airport on a scheduled passenger service to Sydney, Australia. As the aircraft passed through 25,000 ft, the aircraft's number-4 engine failed, resulting in the puncturing of the engine casing and nacelle and the release of debris. The engine was shut down and the flight crew returned the aircraft to San Francisco International Airport. There were no injuries.
An investigation conducted by the engine manufacturer found that the engine failure was initiated by the fatigue fracture of a single stage-2 low pressure (LP) turbine blade. The ensuing rotor imbalance caused the LP turbine bearing to fail, which ultimately resulted in the uncontained release of debris.
As a result of this occurrence, the engine manufacturer released non-modification service bulletins NMSB72-AG729 and NMSB72-AG800; instructing operators of RB211-524 engine variants to fit a more robust LP turbine bearing, so as to reduce the likelihood of catastrophic engine failure resulting from rotor imbalance.

Sources:

http://www.atsb.gov.au/publications/investigation_reports/2010/aair/ao-2010-066.aspx
http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2010/08/31/BA021F67JO.DTL&tsp=1
http://www.heraldsun.com.au/travel/aircrafts-engine-shut-down-in-2006/story-e6frfhb6-1225912819352?from=public_rss
http://www.avherald.com/h?article=4305467b&opt=0
https://flightaware.com/live/flight/QFA74/history/20100831/0610Z/KSFO/YSSY
https://www.theage.com.au/travel/travel-news/exploding-qantas-engine-turbines-broke-off-20101025-170b3.html?autostart=0

Accident investigation:
cover
  
Investigating agency: ATSB
Status: Investigation completed
Duration:
Download report: Final report


Images:

Photo of VH-OJP courtesy AirHistory.net


Victorville - Southern California Logistics (KVCV / VCV)
28 July 2013; (c) Alastair T. Gardiner


Revision history:

Date/timeContributorUpdates
31-Aug-2010 11:19 Geno Added
01-Sep-2010 01:06 slowkid Updated [Time, Aircraft type, Registration, Cn, Total occupants, Location, Destination airport, Source, Narrative]
01-Sep-2010 01:11 slowkid Updated [Date]
01-Sep-2010 03:05 Anon. Updated [Registration, Source]
01-Sep-2010 11:17 slowkid Updated [Date, Time, Aircraft type, Cn, Total occupants, Location, Destination airport, Source, Narrative]
01-Sep-2010 14:48 harro Updated [Source]
26-Oct-2010 04:29 Anon. Updated [Source, Narrative]
17-Apr-2012 12:40 harro Updated [Time, Source, Narrative]

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