12 Dec 2025, 22:23 [ UTC - 5; DST ]
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Username Protected
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Post subject: Re: Doug's New Jet A plane  Posted: 20 May 2013, 20:59 |
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Joined: 12/19/08
Posts: 560
Post Likes: +22
Location: CYXH - Medicine Hat, AB
Aircraft: DA42
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Username Protected wrote: The coldest flight I've had was -40C at 28k coming back for Utah.
Are we talking C or F? Pretty close to same as C & F meet up at about -40. We were -40 last month coming home from Vancouver Island, BC at FL200. It was really cool as the 414 was leaving contrails!
_________________
Doug Thompson
CPL, ME, IR
CYXH - Medicine Hat, AB
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Post subject: Re: Doug's New Jet A plane Posted: 20 May 2013, 21:00 |
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Joined: 01/29/08
Posts: 26338
Post Likes: +13086
Location: Walterboro, SC. KRBW
Aircraft: PC12NG
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Username Protected wrote: The coldest flight I've had was -40C at 28k coming back for Utah.
Are we talking C or F? At -40, it doesn't matter if we're talking C or F! 
Did you read the thread?
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Username Protected
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Post subject: Re: Doug's New Jet A plane Posted: 20 May 2013, 21:02 |
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Joined: 07/11/11
Posts: 1674
Post Likes: +488
Location: Redwood City, CA (KPAO)
Aircraft: 1967 Bonanza V35
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Username Protected wrote: Did you read the thread? I did... do you mean that -47 is the number in question? In that case, yes, there is a difference of a few degrees.
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Post subject: Re: Doug's New Jet A plane Posted: 20 May 2013, 21:40 |
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Joined: 05/23/08
Posts: 6063
Post Likes: +716
Location: CMB7, Ottawa, Canada
Aircraft: TBM - C185 - T206
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I see -50 at FL280 in the winter. That would be -47 C. The primary differences between Jet A and Jet A-1 are the higher freezing point of Jet A (−40 °C (−40 °F) vs. −47 °C (−53 °F) for Jet A-1), and the mandatory addition of an anti-static additive to Jet A-1. Username Protected wrote: The coldest flight I've had was -40C at 28k coming back for Utah.
Are we talking C or F?
_________________
Former Baron 58 owner.
Pistons engines are for tractors.
Marc Bourdon
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Post subject: Re: Doug's New Jet A plane Posted: 20 May 2013, 22:05 |
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Joined: 12/19/08
Posts: 560
Post Likes: +22
Location: CYXH - Medicine Hat, AB
Aircraft: DA42
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Username Protected wrote: Congratulations, both to the plane and the new professional horizons. Thanks Florian Are you spending much time in Fargo anymore? I plan on stopping there on the way home and would be good to catch up.
_________________
Doug Thompson
CPL, ME, IR
CYXH - Medicine Hat, AB
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Post subject: Re: Doug's New Jet A plane Posted: 20 May 2013, 22:13 |
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Joined: 12/19/08
Posts: 560
Post Likes: +22
Location: CYXH - Medicine Hat, AB
Aircraft: DA42
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Username Protected wrote: Neat bird I'm still a believer in diesels. Seems like the"already here" alternative. Can't wait to see a vid or pic. MC  Thanks Mark I also believe that diesels have a future in GA. Hopefully have some Picts in the near future.
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Doug Thompson
CPL, ME, IR
CYXH - Medicine Hat, AB
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Post subject: Re: Doug's New Jet A plane Posted: 20 May 2013, 22:14 |
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Joined: 12/19/08
Posts: 560
Post Likes: +22
Location: CYXH - Medicine Hat, AB
Aircraft: DA42
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Username Protected wrote: Hey Doug, You need to update your profile! Dooh! Will get on that! Glad you are ok after storm.
_________________
Doug Thompson
CPL, ME, IR
CYXH - Medicine Hat, AB
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Username Protected
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Post subject: Re: Doug's New Jet A plane Posted: 20 May 2013, 23:40 |
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Joined: 11/21/09
Posts: 12496
Post Likes: +17182
Location: Albany, TX
Aircraft: Prior SR22T,V35B,182
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Username Protected wrote: Hey Doug, You need to update your profile! Dooh! Will get on that! Glad you are ok after storm.
Ahhhh, c'mon! i didn't mean it! 
If I'd ever thunk.... 
Wanna trade?
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Post subject: Re: Doug's New Jet A plane Posted: 21 May 2013, 00:40 |
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Joined: 12/19/08
Posts: 560
Post Likes: +22
Location: CYXH - Medicine Hat, AB
Aircraft: DA42
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Username Protected wrote: Ahhhh, c'mon! i didn't mean it! If I'd ever thunk.... Wanna trade? I'll swap ya rides but not sure a trade is in the cards All in good fun 
_________________
Doug Thompson
CPL, ME, IR
CYXH - Medicine Hat, AB
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Username Protected
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Post subject: Re: Doug's New Jet A plane Posted: 21 May 2013, 01:05 |
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Joined: 08/03/08
Posts: 16153
Post Likes: +8870
Location: 2W5
Aircraft: A36
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Username Protected wrote: Congratulations, both to the plane and the new professional horizons. Thanks Florian Are you spending much time in Fargo anymore? I plan on stopping there on the way home and would be good to catch up.
Dont spend much time there these days. Let me know when you are coming through.
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Post subject: Re: Doug's New Jet A plane Posted: 21 May 2013, 01:34 |
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Joined: 11/08/12
Posts: 7743
Post Likes: +5117
Location: Live in San Carlos, CA - based Hayward, CA KHWD
Aircraft: Piaggio Avanti
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Username Protected wrote:
Paul, Jet A1 is good to -47.
Really? Then why am I adding prist?
JetA1 will have acceptable liquidity and so forth at -47C. However, any water in the fuel, which in theory (i.e. the JetA1 spec) isn't there but in practice often is, will freeze well before the -47C mark. Which is what the PRIST does - keep the entrained water from condensing and freezing.
Many jets (and not many turboprops for reasons not clear to me) have a fuel heating system that guarantees the water in the fuel won't freeze and clog filters, so they don't need PRIST.
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-Jon C.
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Post subject: Re: Doug's New Jet A plane Posted: 21 May 2013, 02:22 |
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Joined: 08/03/08
Posts: 16153
Post Likes: +8870
Location: 2W5
Aircraft: A36
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Username Protected wrote: Many jets (and not many turboprops for reasons not clear to me) have a fuel heating system that guarantees the water in the fuel won't freeze and clog filters, so they don't need PRIST. Sometimes the fuel-heater works, and sometimes it doesn't  Attachment: BA_just_a_wee_bit_short.jpg
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Post subject: Re: Doug's New Jet A plane Posted: 21 May 2013, 07:30 |
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Joined: 07/26/10
Posts: 4296
Post Likes: +197
Location: West Palm Beach, FL (KLNA)
Aircraft: 1979 Duke B60
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Username Protected wrote: Did you read the thread? -40C & -40F are the same.. 
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