Qantas B744 near Bangkok on Oct 16th 2011, engine shut down in flight
Last Update: August 3, 2012 / 12:29:22 GMT/Zulu time
Incident Facts
Date of incident
Oct 16, 2011
Classification
Incident
Airline
Qantas
Flight number
QF-2
Departure
Bangkok, Thailand
Destination
Sydney, Australia
Aircraft Registration
VH-OJS
Aircraft Type
Boeing 747-400
ICAO Type Designator
B744
Passengers reported the engine emitted sparks as well.
The airline confirmed the crew shut an engine down following a bang and excessive shuddering about 10 minutes into the flight.
On Nov 23rd 2011 the NTSB reported the crew received indications of abnormal exhaust gas temperatures and vibrations in the #3 engine during the climb. The occurrence is being investigated by the ATSB.
On Aug 3rd 2012 the Australian Transportation Safety Board (ATSB) released their final report in their monthly bulletin reporting that the aircraft was climbing through 13,000 feet about 8 minutes into the flight when the #3 engine emitted a loud bang and vibrations, the crew observed abnormal engine indications thereafter. Fumes were observed in the cabin for several minutes. The crew shut the engine down and returned to Bangkok for a safe landing.
A borescopis inspection revealed a single stage 7 intermediate compressor blade had separated from its slot. The remaining intermediate compressor blades and surrounding components showed damage. Evidence of a small localised Titanium fire was found indicating the released blade had been jammed between the stage 7 IPC rotors and stators.
The engine had been last overhauled in September 2007 and had accumulated 19,615 hours in 1,988 cycles since.
The analysis of why the blade was released is still being investigated by the engine manufacturer. It had been the 7th IPC blade release event in 40 million engine hours, only 2 of the events resulted in conclusions to the cause.
Incident Facts
Date of incident
Oct 16, 2011
Classification
Incident
Airline
Qantas
Flight number
QF-2
Departure
Bangkok, Thailand
Destination
Sydney, Australia
Aircraft Registration
VH-OJS
Aircraft Type
Boeing 747-400
ICAO Type Designator
B744
This article is published under license from Avherald.com. © of text by Avherald.com.
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