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 Post subject: PT6’s fail too
PostPosted: 21 Oct 2019, 15:51 
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Joined: 02/04/13
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Company: Fox 3 Jet Warbirds
Aircraft: Duke-B60/L-39/Extra
https://youtu.be/vtet47DJfLk

Watch 9:55 - 15:00. Great outcome and sober thinking.

I lost a PT6A many years ago ... so glad I had another on board.

-Kevin


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 Post subject: Re: PT6’s fail too
PostPosted: 21 Oct 2019, 16:59 
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Username Protected wrote:
https://youtu.be/vtet47DJfLk

Watch 9:55 - 15:00. Great outcome and sober thinking.

I lost a PT6A many years ago ... so glad I had another on board.

-Kevin



Video kept stopping on my phone. Looked precautionary?


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 Post subject: Re: PT6’s fail too
PostPosted: 21 Oct 2019, 17:02 
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Username Protected wrote:
Looked precautionary?
Looked that way to me. Saw oil streaming out of the cowling, noted oil pressure decreasing, shut it down. Hard to tell, but looks like a seal let go. Would love to have more details.


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 Post subject: Re: PT6’s fail too
PostPosted: 21 Oct 2019, 17:54 
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Joined: 03/17/08
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Search the accidents database for C-208 accidents. There are several PT-6 failures. And not all of them are air in the tanks.

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Doug Rozendaal
MCW
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 Post subject: Re: PT6’s fail too
PostPosted: 21 Oct 2019, 18:15 
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Username Protected wrote:
https://youtu.be/vtet47DJfLk

Watch 9:55 - 15:00. Great outcome and sober thinking.

-Kevin

He chose to not declare an emergency.

Is that not part of the usual protocol with an engine failure with turbine engines?

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 Post subject: Re: PT6’s fail too
PostPosted: 21 Oct 2019, 18:33 
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If it’s SETP it is.

For some twins it would be regardless of recip or turbine if the a/c’s ground mobility is severely hampered with only one engine. I fly one.


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 Post subject: Re: PT6’s fail too
PostPosted: 21 Oct 2019, 18:43 
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Username Protected wrote:
He chose to not declare an emergency.

Is that not part of the usual protocol with an engine failure with turbine engines?


Declare early, declare often.

I have no desire to second guess the pilot, but it's definitely NOT part of the 'usual protocol' with any airplane. Personally, I would have declared. That being said, he did a fine job and produces good looking videos!

Robert


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 Post subject: Re: PT6’s fail too
PostPosted: 21 Oct 2019, 18:56 
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I’d declare if not getting the handling needed. Otherwise, do what he did.

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 Post subject: Re: PT6’s fail too
PostPosted: 22 Oct 2019, 00:07 
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Save!

Good job Christophe.


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 Post subject: Re: PT6’s fail too
PostPosted: 22 Oct 2019, 00:48 
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Username Protected wrote:
He chose to not declare an emergency.

Is that not part of the usual protocol with an engine failure with turbine engines?


Declare early, declare often.

I have no desire to second guess the pilot, but it's definitely NOT part of the 'usual protocol' with any airplane. Personally, I would have declared. That being said, he did a fine job and produces good looking videos!

Robert

I agree. Declare and get your priority handling as you deserve. A big long straight unobstructed priority laden final.

Triple pad your odds and wish you hadn’t been such a %#$@# later.

Remember things generally won’t improve once they’ve gone to %#$@ and each additional new complication is 2x+ worse than it might be on its own otherwise.
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 Post subject: Re: PT6’s fail too
PostPosted: 22 Oct 2019, 05:13 
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Christophe is a good pilot with lots of experience and he makes some great flying videos. I think he did the right thing. Glad it all resolved in what seems like a speedy fashion and probably didn't cost an arm and a leg.

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 Post subject: Re: PT6’s fail too
PostPosted: 22 Oct 2019, 08:47 
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Had a friend who lost a PT6 in a Meridian at FL250. Rollback and went dead in about 90 seconds. His recollection - "It's a very long, very quiet ride down from 250"...


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 Post subject: Re: PT6’s fail too
PostPosted: 22 Oct 2019, 09:38 
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Username Protected wrote:
Had a friend who lost a PT6 in a Meridian at FL250. Rollback and went dead in about 90 seconds. His recollection - "It's a very long, very quiet ride down from 250"...


To be exact, that would be about 34 minutes and 73 nm no wind glide range. So put on the oxygen mask, pull out a book, take a nap, figure out which state you want to land in, and pick an airport with the best food. ;)

The Meridian is essentially never out of glide to at least one suitable airport in the lower 48, with very few exceptions. Since it out-climbs its glide angle, you can almost always return to the field you left all the way to cruise, although that may not be the best airport at the time. As reliable as the PT6 is, I like to leave nearest airports up on one of the windows.

Even in the Rockies where the terrain is high, and the airports scattered, always have options. I just am careful with GPS direct which can put you in some remote areas. If you follow Jet or Victor airways, they are typically over more populated areas. I like the glide ring in foreflight in that case, which takes into account terrain and elevation

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 Post subject: Re: PT6’s fail too
PostPosted: 22 Oct 2019, 11:31 
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would like to know what seal had failed and if there was recent maintenance in that area on it


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 Post subject: Re: PT6’s fail too
PostPosted: 22 Oct 2019, 16:25 
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Username Protected wrote:
Had a friend who lost a PT6 in a Meridian at FL250. Rollback and went dead in about 90 seconds. His recollection - "It's a very long, very quiet ride down from 250"...


To be exact, that would be about 34 minutes and 73 nm no wind glide range. So put on the oxygen mask, pull out a book, take a nap, figure out which state you want to land in, and pick an airport with the best food. ;)

The Meridian is essentially never out of glide to at least one suitable airport in the lower 48, with very few exceptions. Since it out-climbs its glide angle, you can almost always return to the field you left all the way to cruise, although that may not be the best airport at the time. As reliable as the PT6 is, I like to leave nearest airports up on one of the windows.

Even in the Rockies where the terrain is high, and the airports scattered, always have options. I just am careful with GPS direct which can put you in some remote areas. If you follow Jet or Victor airways, they are typically over more populated areas. I like the glide ring in foreflight in that case, which takes into account terrain and elevation

Attachment:
1 (17).jpg



So that's assuming you will always get it right the first time and have zero unexpected variables enter the equation, and it completely precludes widespread IFR conditions of the ability to navigate through otherwise navigable weather such as storm cells. It's a reasonable position to take if you are a good weather daytime pilot. I will happily pay the freight for the spare pt6.

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