09 May 2025, 09:12 [ UTC - 5; DST ]
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Post subject: Re: Pratt reaches ONE BILLION hours in service! Posted: 12 Apr 2024, 20:19 |
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Joined: 11/08/12 Posts: 7290 Post Likes: +4787 Location: Live in San Carlos, CA - based Hayward, CA KHWD
Aircraft: Piaggio Avanti
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Username Protected wrote: Not if it’s a million engines each running for 1000 hours. That’s a million low time engines. I would expect them to have an excellent record. Their number is meaningless. Actually, another angle on this is WHICH PT6 are we talking about? There are pretty significant differences between the small ones and the big ones. I'd be interested in a breakdown of those billion hours and failure rates by engine series.
_________________ -Jon C.
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Post subject: Re: Pratt reaches ONE BILLION hours in service! Posted: 12 Apr 2024, 22:54 |
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Joined: 05/31/13 Posts: 1295 Post Likes: +697 Company: Docking Drawer Location: KCCR
Aircraft: C425
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Quote: Here's what caused my last (and hopefully last) in-flight engine failure. It was a PT6-28, and IIRC this shaft coupled between the fuel controller and pump...before the splines stripped. Are talking about that red plastic drive shaft between the pump and the FCU? I thought if that failed the FCU goes to max fuel (runaway torque). Is that what happened?
_________________ ATP, CFI-I, MEI http://www.dockingdrawer.com
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Post subject: Re: Pratt reaches ONE BILLION hours in service! Posted: 12 Apr 2024, 23:37 |
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Joined: 04/08/12 Posts: 204 Post Likes: +99 Location: Pittsburgh, PA
Aircraft: Cessna 414A
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Username Protected wrote: Quote: Here's what caused my last (and hopefully last) in-flight engine failure. It was a PT6-28, and IIRC this shaft coupled between the fuel controller and pump...before the splines stripped. Are talking about that red plastic drive shaft between the pump and the FCU? I thought if that failed the FCU goes to max fuel (runaway torque). Is that what happened? In this incident, the engine just quickly spooled down, as if i had pulled the fuel shut off. The mechanics presented me with that shaft as a souvenir.
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Post subject: Re: Pratt reaches ONE BILLION hours in service! Posted: 13 Apr 2024, 01:36 |
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Joined: 07/22/14 Posts: 10010 Post Likes: +19885 Company: Mountain Airframe LLC Location: Mena, Arkansas
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Username Protected wrote: How is their billion hour number normalized? How many engines are represented by that? If a billion engines each flew flawlessly for one hour, does that count? A billion hours is about 114,000 years. Their number is marketing hype. It's meaningless by itself. I’ll finish this thread later, but just wanted you to know that you are a fart in the space suit at the moment 
_________________ If a diligent man puts his energy into the exclusive effort, a molehill can be made into a mountain
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Post subject: Re: Pratt reaches ONE BILLION hours in service! Posted: 11 Apr 2025, 15:55 |
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Joined: 11/15/17 Posts: 1058 Post Likes: +546 Company: Cessna (retired)
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At Cessna, we went through engine failure and removal rates when working on military proposals and also had a captive fleet of T-47's. We found significant differences in engine failure and removal rates between our data and PWC data. There were two major reasons for the differences. The first one is that PWC can only report data that they know about, which is not all of it. The second one is that they only report data that "counts," per their criteria.
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Post subject: Re: Pratt reaches ONE BILLION hours in service! Posted: 17 Apr 2025, 16:11 |
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Joined: 10/31/11 Posts: 1124 Post Likes: +707 Company: B777, 767, 757, 727, MD11, S80 Location: Colorado Springs
Aircraft: Thrush S2R, AC500B,
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Username Protected wrote: Not if it’s a million engines each running for 1000 hours. That’s a million low time engines. I would expect them to have an excellent record. Their number is meaningless. Really? You're smarter than your posts on this thread are showing. Prove me wrong.......
What plane has a key board?
_________________ Dan F Indecision is the key to flexibility
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