11 Nov 2025, 15:45 [ UTC - 5; DST ]
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Post subject: Citation Mustang Motor shutdown  Posted: 17 Nov 2018, 21:30 |
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Joined: 05/05/09
Posts: 5300
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Aircraft: C501, R66, A36
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One of my best friends just called me having shut his Mustang motor down shaking like crazy just after a HOT inspection. I speculated a #3 bearing failure and PW speculates a starter-generator failure. Speculate away.
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Post subject: Re: Citation Mustang Motor shutdown Posted: 17 Nov 2018, 21:32 |
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Joined: 09/07/13
Posts: 511
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Location: Louisiana
Aircraft: K35 Bonanza
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Username Protected wrote: One of my best friends just called me having shut his Mustang motor down shaking like crazy just after a HOT inspection. I speculated a #3 bearing failure and PW speculates a starter-generator failure. Speculate away. How many of these engines have had a #3 bearing failure. It seems like I have heard of this before?
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Post subject: Re: Citation Mustang Motor shutdown Posted: 18 Nov 2018, 00:01 |
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Joined: 01/29/09
Posts: 4789
Post Likes: +2500
Company: retired corporate mostly
Location: Chico,California KCIC/CL56
Aircraft: 1956 Champion 7EC
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Quote: PW speculates a starter-generator failure. Had a vibration in a Citation long ago. When we diverted and landed there was bronze looking debris under the starter gen. (not the same engine... but symptom)
_________________
Jeff
soloed in a land of Superhomers/1959 Cessna 150, retired with Proline 21/ CJ4.
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Post subject: Re: Citation Mustang Motor shutdown Posted: 18 Nov 2018, 08:17 |
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Joined: 05/05/09
Posts: 5300
Post Likes: +5292
Aircraft: C501, R66, A36
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He did cycle the gen and it was still making power and cycling did not change the vibration. The motor has about 1800 hours on it and literally just had an on wing HOT. He's on every program so he is not concerned about the money. PW is coming out Monday to replace the starter-gen.
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Post subject: Re: Citation Mustang Motor shutdown Posted: 18 Nov 2018, 08:55 |
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Joined: 01/31/09
Posts: 5193
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Location: Northern NJ
Aircraft: SR22;CJ2+;C510
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Starter gen vibration is a known issue. Turning gen off does not uncouple gen from engine. Vibrations can damage gear in accessory pad on engine. Only way to stop damage in flight is to shutdown engine. Your friend should join CJP where this problem has been discussed for over 2 years. Textron now has a program to replace starter/gens with more than 900 hours with Mod D gens. Attachment: 1628F612-7126-4136-A709-442D7B4DD109.png Attachment: 4EB78315-EB4C-43E5-9BDF-3310EB2E3EA4.png
Please login or Register for a free account via the link in the red bar above to download files.
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Allen
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Post subject: Re: Citation Mustang Motor shutdown Posted: 18 Nov 2018, 10:19 |
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Joined: 08/05/11
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Aircraft: BE-55
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Username Protected wrote:
Your friend should join CJP where this problem has been discussed for over 2 years. ]
^^^^^^^^^^^^^^ Awesome jet aviation site for for anybody with any jet or like me, at this time, just interested in jets.
_________________
“ Embrace the Suck”
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Post subject: Re: Citation Mustang Motor shutdown Posted: 18 Nov 2018, 17:14 |
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Joined: 05/05/09
Posts: 5300
Post Likes: +5292
Aircraft: C501, R66, A36
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He's a member of CJP and pretty up on these things. Fresh hot from Pratt; he's on pro-parts and motor plan. This is probably just a freak event but I'll report back when they show up Monday with the techs.
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Post subject: Re: Citation Mustang Motor shutdown Posted: 20 Nov 2018, 20:47 |
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Joined: 05/05/09
Posts: 5300
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Aircraft: C501, R66, A36
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Programs replaced both starter gens, $800 in labor. Back in business. Cessna and Pratt impressed me today.
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Post subject: Re: Citation Mustang Motor shutdown Posted: 21 Nov 2018, 13:18 |
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Joined: 09/04/10
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Aircraft: C55, PC-12
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Username Protected wrote: Programs replaced both starter gens, $800 in labor. Back in business. Cessna and Pratt impressed me today. This is good to hear, I've heard mixed reviews about Pratt engine programs, it was one of the downsides of the Mustang for me.
_________________
John Lockhart
Phoenix, AZ
Ridgway, CO
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Post subject: Re: Citation Mustang Motor shutdown Posted: 21 Nov 2018, 13:34 |
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Joined: 01/31/09
Posts: 5193
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Location: Northern NJ
Aircraft: SR22;CJ2+;C510
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Username Protected wrote: Programs replaced both starter gens, $800 in labor. Back in business. Cessna and Pratt impressed me today. This is good to hear, I've heard mixed reviews about Pratt engine programs, it was one of the downsides of the Mustang for me.
The starter/gens is a known issue for which Textron/Pratt acknowledge the problem and have a program for replacement. Stories of difficulty with Pratt are around for one off problems. I have heard none of those type of stories for Williams engine programs.
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Allen
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Post subject: Re: Citation Mustang Motor shutdown Posted: 21 Nov 2018, 16:57 |
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Joined: 12/26/17
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Pratt programs and Cessna have been good to to us on our Mustang.
Last edited on 22 Nov 2018, 02:38, edited 1 time in total.
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Post subject: Re: Citation Mustang Motor shutdown Posted: 21 Nov 2018, 18:14 |
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Joined: 05/05/09
Posts: 5300
Post Likes: +5292
Aircraft: C501, R66, A36
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My friend loves his Mustang and flies it about 300 hours a year. The programs all in are about $500/hour but literally cover everything other than inspections and some labor costs. He thinks they are a good value and we squabble often about whether or not I agree. But, it works for him and that's all that matters. For example, he mentioned "hey what about the other starter gen" and they said, no problem and replaced it also. Impressive.
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