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19 Jun 2021, 14:37 [ UTC - 5; DST ]


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 Post subject: Re: Considering buying a Meridian
PostPosted: 09 May 2021, 20:15 
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Username Protected wrote:
M600 has higher ITT and torque limits.


Which has those flying Meridians wondering what can the bird do if they run M600 numbers ;) . Although the engine mounting was beefed up a little as well in the M600, so probably best not to run the M600 tables in a Meridian. Also the software will log exceedences. The PT6 in the Meridian is probably the most babied Pratt out there.


If allowed to run M600 torques I think the Meridian would be a 280kt airplane on 260#s. They'd probably sell a bunch more M500's if they opened up this restriction. I don't think it would hurt M600 sales at all. M600 buyers are buying for the useful load and range. They'd nibble away a few more TBM buyers/owners looking for lower costs.

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 Post subject: Re: Considering buying a Meridian
PostPosted: 09 May 2021, 20:52 
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Location: MYF, San Diego, CA
Aircraft: A36
I know too little about turbines to comment on torques, but speed sells airplanes. This arm-chair shopper has been swayed by comments about the relatively low Vmo of the Meridian, but recently I saw 3200 fpm quoted as a reasonable low-power descent rate. That suggests descents could be accomplished in less than ten minutes. Ten minutes at 188 knots is not going to have a devastating effect on the time enroute. What is wrong with my reasoning?


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 Post subject: Re: Considering buying a Meridian
PostPosted: 09 May 2021, 21:25 
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Location: Mandan, ND
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Username Protected wrote:

If allowed to run M600 torques I think the Meridian would be a 280kt airplane on 260#s. They'd probably sell a bunch more M500's if they opened up this restriction. I don't think it would hurt M600 sales at all. M600 buyers are buying for the useful load and range. They'd nibble away a few more TBM buyers/owners looking for lower costs.


Horsepower = (RPM X Torque)/5252

Since the prop is governed at 2k on the Meridian (not adjustable like a King Air), your limiter for HP is Torque.

Can you run the Meridian/M500 beyond torque redline with out hurting the engine? Yep. But now you are making more HP than Piper certified the airplane with and have just entered test pilot territory.

As non-test pilots (at least me...) We have no idea whether the airplane can handle another 100hp or not. I would not want to be the one to find out.

Bottom line, the engine/gearbox can make way more power than the airframe is designed for. Not sure of all the specific differences between a -42 and a -42A, but in a King Air 200 a -42 makes 850hp at 2,000 rpm and 2235 torque.


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 Post subject: Re: Considering buying a Meridian
PostPosted: 09 May 2021, 21:55 
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Joined: 04/09/15
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Aircraft: Bonanza a36
The Meridian has dual G500’s and dual 750GTN’s what is amazing is how close the approach speeds in the Meridian are to the A36, in fact I would say they are practically the Same.

My time in the A36 around 1600 hours made the transition that much easier

Joe


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 Post subject: Re: Considering buying a Meridian
PostPosted: 09 May 2021, 22:27 
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Joined: 10/23/11
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Company: AWM
Location: Houston Texas
Aircraft: Piper Meridan
After owning 3 Barrons one if which was a P, a Duke, and a TBM 700 I bought a Meridian. I've owned it for over a year now. It is by far the most economical plane I've owned. I didn't go new. I bought 2001 with the Meggit /530/ Stec 55X panel setup. The engine had 2800 ish hours on it. Due to a warped main stator needing to be replaced at pre buy I chose to do a hot section inspection. I bought it right and look to enjoy it for year's to come.

Mine trues out at 270 all day burning 37-40 GPH at 270 or 280. The 188 VMO in descents is no big deal. Great airlane and fits my mission well. We fly from Houston to Cabo often.


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 Post subject: Re: Considering buying a Meridian
PostPosted: 09 May 2021, 22:40 
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Username Protected wrote:

If allowed to run M600 torques I think the Meridian would be a 280kt airplane on 260#s. They'd probably sell a bunch more M500's if they opened up this restriction. I don't think it would hurt M600 sales at all. M600 buyers are buying for the useful load and range. They'd nibble away a few more TBM buyers/owners looking for lower costs.


Horsepower = (RPM X Torque)/5252

Since the prop is governed at 2k on the Meridian (not adjustable like a King Air), your limiter for HP is Torque.

Can you run the Meridian/M500 beyond torque redline with out hurting the engine? Yep. But now you are making more HP than Piper certified the airplane with and have just entered test pilot territory.

As non-test pilots (at least me...) We have no idea whether the airplane can handle another 100hp or not. I would not want to be the one to find out.

Bottom line, the engine/gearbox can make way more power than the airframe is designed for. Not sure of all the specific differences between a -42 and a -42A, but in a King Air 200 a -42 makes 850hp at 2,000 rpm and 2235 torque.


I agree, which is why I'm not advocating operators run their Meridian's at M600 book values. I'm advocating Piper invest some resources in recertification on something that I think they know the airframe can do with little to no modifications. I don't know anything about the certification process, but they probably wouldn't need to recertify. Just publish advisory data.

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 Post subject: Re: Considering buying a Meridian
PostPosted: 09 May 2021, 22:49 
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Location: Mandan, ND
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Username Protected wrote:
I agree, which is why I'm not advocating operators run their Meridian's at M600 book values. I'm advocating Piper invest some resources in recertification on something that I think they know the airframe can do with little to no modifications. I don't know anything about the certification process, but they probably wouldn't need to recertify. Just publish advisory


Interesting idea!

I do have to wonder, what would Piper’s incentive (ROI?) be for doing such?

Could they? Sure. Would they? My bet says “never in a million years...”


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 Post subject: Re: Considering buying a Meridian
PostPosted: 09 May 2021, 23:40 
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It would only be to sell new M500’s.


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 Post subject: Re: Considering buying a Meridian
PostPosted: 09 May 2021, 23:46 
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After owning 3 Barrons one if which was a P, a Duke, and a TBM 700 I bought a Meridian. I've owned it for over a year now. It is by far the most economical plane I've owned. I didn't go new. I bought 2001 with the Meggit /530/ Stec 55X panel setup. The engine had 2800 ish hours on it. Due to a warped main stator needing to be replaced at pre buy I chose to do a hot section inspection. I bought it right and look to enjoy it for year's to come.

Mine trues out at 270 all day burning 37-40 GPH at 270 or 280. The 188 VMO in descents is no big deal. Great airlane and fits my mission well. We fly from Houston to Cabo often.


Ryan, I’m interested what your perspective of operating cost between the 700 and Meridian is? How long did you own the TBM?

I’m also interested in what your perceived difference in block speeds is in the real world with use of inertial separator vs. higher VMO?

270 is a fast Meridian. You must not have the vortex generators.


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 Post subject: Re: Considering buying a Meridian
PostPosted: 10 May 2021, 00:22 
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Username Protected wrote:

What about the T and the B?


Time between. Typically expressed both in calendar years (uniformly ignored in part 91) and flight hours (increasingly ignored in lieu of on condition monitoring)


:lol: Was joking around. Disregard.

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 Post subject: Re: Considering buying a Meridian
PostPosted: 10 May 2021, 09:44 
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Company: AWM
Location: Houston Texas
Aircraft: Piper Meridan
Ryan, I’m interested what your perspective of operating cost between the 700 and Meridian is? How long did you own the TBM?

I’m also interested in what your perceived difference in block speeds is in the real world with use of inertial separator vs. higher VMO?

270 is a fast Meridian. You must not have the vortex generators.


The TBM cost more than the meridian in every way. Parts were more expensive, fuel burn is 20 - 25 Gallons more per hour. Repair cost seemed to be higher in general. Insurance was more expensive due to the hull value being 1.2M vs 650,000. The only thing I miss on the TBM is the range.

I blocked the TBM at 285 and block the meridian at 265.

I don’t follow your VMO vs Inertial Separator question above. Happy to answer if you care to elaborate.

I owned the TBM about 3 years.

Ryan


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 Post subject: Re: Considering buying a Meridian
PostPosted: 10 May 2021, 15:23 
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Joined: 01/10/13
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Location: greenville,ms
Aircraft: baron 58
So do you think it is cheaper than a baron on a per mile basis? I've thought about one myself. what about insurance and yearly training costs?


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 Post subject: Re: Considering buying a Meridian
PostPosted: 10 May 2021, 16:16 
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Aircraft: Bonanza A36
Let's say that I wanted to fly a Meridien at 5,000 ft (for sight seeing perhaps). How much fuel would it use at what speed?


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 Post subject: Re: Considering buying a Meridian
PostPosted: 10 May 2021, 16:21 
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Joined: 10/04/19
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Company: Brandt & Co.
Location: Jackson Hole, Santa Barbara
Aircraft: a55p2 & tw Pacer
Username Protected wrote:
So do you think it is cheaper than a baron on a per mile basis? I've thought about one myself. what about insurance and yearly training costs?


Following for this answer.
-J

_________________
PPL AMEL
@jacksonholepilot on instagram


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 Post subject: Re: Considering buying a Meridian
PostPosted: 10 May 2021, 16:59 
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Username Protected wrote:
Let's say that I wanted to fly a Meridien at 5,000 ft (for sight seeing perhaps). How much fuel would it use at what speed?


About 38 gph at 150kts, and 48gph at 200kts.


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