TPE331 overhaul places

[Adam Frisch]

Thought I'd start a comprehensive list on this subject. A friend just bought a MU-2 and has been going through them to get estimates for HSI. To say that the prices vary, is an understatement. I'll add to this list as I gain information.

1. Priority Turbines, owner Randy Barbee (918-638-6430‬)

[donv]

National and Copper State are the two I'm familiar with.

[Adam Frisch]

Here's info from a friend with an MU-2:

1. Arkansas Turbine said $50-55k is the average, but that a bad one will go for around $90k. The $50-55k includes using used serviceable/overhauled parts as appropriate
2. IJSC gave me a "pre-inspection estimate" of $85k. That included replacing the AD'd plenum (which on -1s isn't required, and is an $18k part) but also included new rotors and stators for stages 1 and 2
3. Turbine Standard said the last 5 -1s they did ranged from $77k to $95k. They primarily use used/overhauled/serviceable parts in their hot sections, so they seem to just be expensive
4. Turbine Engine Consultants said $80-100k is the norm for them
5. Hancock Enterprises said to plan to spend $100k, and that was the end of it
6. Calvin Mudgett at The Turbine Clinic said the last two he did were $31k and $57k, and bad ones can be $90k

[donv]

The MU-2 used the -1?

[Adam Frisch]

Yes, one or two fo the early models. Think the F model and one other.

[JimC]

Thought I'd start a comprehensive list on this subject. A friend just bought a MU-2...

I'm guessing you're talking about Ted...the aviation world gets smaller as you go up.

[Steve binnette]

Those are some steep prices, is there a reason the -1s cost that much or are all the tpe331 in that ball park?

I had always assumed 50k was the HSI ballpark number.

The -1s have a shorter TBO than later models, don?t they.

I would be shopping for a whole engine.

[Adam Frisch]

Thought I'd start a comprehensive list on this subject. A friend just bought a MU-2...

I'm guessing you're talking about Ted...the aviation world gets smaller as you go up.

Yes, correct, but he asked me to keep his name out of it.

[Adam Frisch]

Those are some steep prices, is there a reason the -1s cost that much or are all the tpe331 in that ball park?

I had always assumed 50k was the HSI ballpark number.

The -1s have a shorter TBO than later models, don?t they.

I would be shopping for a whole engine.

No, they have same TBO. Shouldn't be much difference in price for HSI. Think Bruce was talking worst case scenario.

[donv]

Steve--

Relative to the -1 or -5, I think the -10 hot section should be cheaper. That's not based on any real experience, but on what I've read and what I know about how the -5s tend to lose power as they get close to the hot, while the -10s typically just keep on working.

[Steve binnette]

The -10s operate farther from their limit so maybe that?s why there could be a difference in HSI price.

[donv]

The first stage turbine wheel is much improved on the -10, which I think is a big part of the issue.

[Bruce Byerly]

The first stage turbine wheel is much improved on the -10, which I think is a big part of the issue.

Yes - it?s a 20,000 cycle life part.  The low limit wheel is the 3rd stage and that one is 6,000 cycles as I recall, depending on part, etc.  All engines are different, but a good -10 is outstanding and not comparable to an older engine when it comes to the predictability of inspection costs. Provided it?s not been melted down, of course.