Qantas Emergency Return KSFO, Explosion in Engine?
Borescope Interval
In the aviation section of today's The Australian a Qantas spokesman is quoted as stating:
"The last borescope inspection was July 8. We do it every 750 flight hours, or roughly every six weeks..."
Could somebody with QF RB211 knowledge please advise if this interval is normal for the engine maintenance program, or as a result of an airworthiness directive.
"The last borescope inspection was July 8. We do it every 750 flight hours, or roughly every six weeks..."
Could somebody with QF RB211 knowledge please advise if this interval is normal for the engine maintenance program, or as a result of an airworthiness directive.
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Qantas no longer overhauls its RB211 engines. All the overhauls have been outsourced since last year to Hong Kong. They only have a minor repair capability remaining in Sydney.
No word where or when this engine was last overhauled?
No word where or when this engine was last overhauled?
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By LeadSled...does QF still do RR overhauls in Sydney any longer??, or has it been offshored ??
I can understand C & D check outsourcing (sort of) but I assume engines and airframes are on different maintenance cycles, particularly if a couple of engines go unserviceable over a short period of time, must be an operational nightmare, am I right or wrong? It just doesn't seem a good economical decision.
By CAVEDWELLER.....Qantas no longer overhauls its RB211 engines. All the overhauls have been outsourced since last year to Hong Kong. They only have a minor repair capability remaining in Sydney.
No word where or when this engine was last overhauled?
No word where or when this engine was last overhauled?
Thanks for that, I have only just arrived back in Australia after 10 years away, I just didn't realise how reduced the engine overhaul capability is today in Australia at QF.....
Wow.A good point, where and when....
Usual disclaimers apply!
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The last borescope inspection was July 8. We do it every 750 flight hours, or roughly every six weeks..."
For example: combustion chamber distress would be looked at say 250 hours intervals and the engine could stay on the wing for a couple of years.
Depleted Uranium
Bit off thread but someone else raised the depleted uranium topic. FAA has an interesting old Advisory Circular warning of possible poisoning due to ingestion of depleted uranium during accident investigation http://rgl.faa.gov/Regulatory_and_Gu...E/AC20-123.pdf. Manufacturers give similar stern warnings about production and installation of d/u balance weights. US Military of course insists there is no hazard to human health from all the depleted uranium munitions blasted over Iraq!
In an engine failure of that magnitude, apart rom the obvious damage, what other damage would an engine typically suffer. I can imagie bearings would suffer a lot of stress from the imballance, would vibrational loads be transmitted forward to the compressor sections, hence damaging parts upstream?
Is there a protocol that dictates all components are scrapped or is a simple overhaul done and components that are still servicable returned to the parts pool.
Is there a protocol that dictates all components are scrapped or is a simple overhaul done and components that are still servicable returned to the parts pool.
Is there a protocol that dictates all components are scrapped or is a simple overhaul done and components that are still servicable returned to the parts pool.
For the subject event in this thread I suspect that the engine will be returned to service after an overhaul.
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Are we absolutely sure this was an RB-211 powered aircraft? The last time I flew Qantas SFO-SYD, last year, the equipment in use was the Extended Range version of the 744, a 747-438ER. Judging by the length of the (very comfortable) journey, I think I worked out why.
And the engines on VH-OEH were, I think, General Electric CF6-80C2B5.
And the engines on VH-OEH were, I think, General Electric CF6-80C2B5.
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Engine RB211
Aircraft OJP RR RB211 Engines - nbr 4 engine overhauled in HKG last year, engine suffered failure nbr 3 bearing at 28000Ft on climb, had high vibes & then went EGT Amber 795 C. Turbines cut turbine overheat switches wiring & EGT when it let go. Believe engine is being sent back to HKG for strip investigation.
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D120A,
Qantas VH-OJ- series 747-400s are powered by RB211s.
VH-OE- series are/were those bought from Malaysian and Korean and the 747-400ERs; all are powered by CF6s.
Qantas VH-OJ- series 747-400s are powered by RB211s.
VH-OE- series are/were those bought from Malaysian and Korean and the 747-400ERs; all are powered by CF6s.
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Lomopaseo,
as prev mentioned depends on the type/nature of failure if the enigne is rebuilt or scrapped. RR recently told one operator, whose engine had experienced only a fan blade failure, that they would not be getting the enigne back.
Best Regards,
N1 Vibes
as prev mentioned depends on the type/nature of failure if the enigne is rebuilt or scrapped. RR recently told one operator, whose engine had experienced only a fan blade failure, that they would not be getting the enigne back.
Best Regards,
N1 Vibes
Engine strip-down inspection
Believe engine is being sent back to HKG for strip investigation
Seems a bit unlikely. Surely this will be considered a 'serious incident' or even an 'accident' and the engine strip-down would be under AAIB (UK engine) or NTSB (happened in the US of A, aircraft US-certified) or ATSB (Oz-registered aircraft) supervision. You'd be wanting a major engine plant with all the clever toys for metallurgy, electron-microscopy, etc. etc. So not an MRO, a main plant, so I'd be guessing RR Derby.
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Kiwi,
the AAIB travel to HKG, the HAESL facility strips the engine with AAIB and RR in attendance(Haesl has permanent RR staff onsite). Any clever metallurgy stuff is done in RR Derby. HAESL have done lot's of other incident investigation engines.
Best Regards,
N1 Vibes
the AAIB travel to HKG, the HAESL facility strips the engine with AAIB and RR in attendance(Haesl has permanent RR staff onsite). Any clever metallurgy stuff is done in RR Derby. HAESL have done lot's of other incident investigation engines.
Best Regards,
N1 Vibes