30 Apr 2024, 12:41 [ 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: 6346
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Location: San Carlos, 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.
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-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
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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?
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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: 178
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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: 9291
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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 
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