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28 Apr 2024, 12:51 [ UTC - 5; DST ]


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 Post subject: Re: Learjet 23 Restoration
PostPosted: 10 Jan 2024, 08:38 
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Location: St George UT
Aircraft: Mooney D 1964
64CL?


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 Post subject: Re: Learjet 23 Restoration
PostPosted: 10 Jan 2024, 11:08 
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Joined: 11/19/09
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Location: Wright Brother Award
Aircraft: BE300 LR-JET DA-50
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:scratch: I’m always open to learning new things, so, educate me on a 31a that had tip tanks?


My Bad! It was Joe Clark's 36.
"I have a GREAT memory.........except for the past!"

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https://www.ebay.com/itm/333888896163 ☜☜☜Battery charger for Garmin® 496


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 Post subject: Re: Learjet 23 Restoration
PostPosted: 10 Jan 2024, 12:24 
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Joined: 09/11/09
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Location: Tulsa, Ok
Aircraft: Baron/Bonanza
Username Protected wrote:
Quote:
:scratch: I’m always open to learning new things, so, educate me on a 31a that had tip tanks?


My Bad! It was Joe Clark's 36.
"I have a GREAT memory.........except for the past!"

Image


LOL, no worries. I'm actually a little disappointed I didn't get to learn something new!

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 Post subject: Re: Learjet 23 Restoration
PostPosted: 10 Jan 2024, 21:38 
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Location: Grove Airport, Camas WA
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1500 PPH for the first flight hour, 1200 PPH for the second, maybe a little less for the third. A 2:1 descent profile from there put you on the deck with about 1000 pounds remaining, assuming an unrestricted VMC descent and a full load of fuel at taxi out.


Not picking on you John, but I’ve got over 3000 hours of Learjet time, and the GE powered jets (25’s to be specific) are best flight planned at 22/20/18. Don’t pull them back to idle at 390 or 410 unless you knew you had landing weather above mins.

You’re thinking of 35 numbers. 15/12/11/10/10.


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 Post subject: Re: Learjet 23 Restoration
PostPosted: 10 Jan 2024, 21:43 
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Joined: 09/09/14
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Location: Grove Airport, Camas WA
Aircraft: Cub, Stearman
N1965L was born a 23 but is now technically a 24. I’ve flown that jet. When people say 500 mile an hour twin Comanche, that’s the one they’re talking about.


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 Post subject: Re: Learjet 23 Restoration
PostPosted: 11 Jan 2024, 09:36 
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Joined: 03/01/14
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Location: 0TX0 Granbury TX
Aircraft: T-210M Aeronca 7AC
Not a 20 series but a cool Lear picture, of a picture…


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 Post subject: Re: Learjet 23 Restoration
PostPosted: 11 Jan 2024, 10:49 
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Joined: 10/10/14
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Location: St George UT
Aircraft: Mooney D 1964
Anyone of you ever have a chance to see his bus and trying to make "Learium"
It was a new way to power the bus It never got anywhere that I know of


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 Post subject: Re: Learjet 23 Restoration
PostPosted: 11 Jan 2024, 12:32 
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Joined: 08/24/13
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Company: Aviation Tools / CCX
Location: KSMQ New Jersey
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Anyone of you ever have a chance to see his bus and trying to make "Learium"
It was a new way to power the bus It never got anywhere that I know of


https://books.google.com/books?id=NNQDAAAAMBAJ&pg=PA116


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 Post subject: Re: Learjet 23 Restoration
PostPosted: 11 Jan 2024, 12:43 
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Joined: 04/26/13
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Location: Columbus , IN (KBAK)
Aircraft: 1968 Baron D55
Username Protected wrote:

1500 PPH for the first flight hour, 1200 PPH for the second, maybe a little less for the third. A 2:1 descent profile from there put you on the deck with about 1000 pounds remaining, assuming an unrestricted VMC descent and a full load of fuel at taxi out.


Not picking on you John, but I’ve got over 3000 hours of Learjet time, and the GE powered jets (25’s to be specific) are best flight planned at 22/20/18. Don’t pull them back to idle at 390 or 410 unless you knew you had landing weather above mins.

You’re thinking of 35 numbers. 15/12/11/10/10.

Yeah, I got my numbers crossed up. It's been a long time. I do think that we planned 20/15/12/0 for the 23s that we flew, and yeah, once you start down you're landing somewhere. I think the difference between your 25 numbers and mine are due to the weight of the 25 being higher than the 23.
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 Post subject: Re: Learjet 23 Restoration
PostPosted: 11 Jan 2024, 13:05 
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Location: St George UT
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Pull them back too far up high and you lose the cabin pressure
At least in the several I flew.


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 Post subject: Re: Learjet 23 Restoration
PostPosted: 11 Jan 2024, 14:08 
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Joined: 04/26/13
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Location: Columbus , IN (KBAK)
Aircraft: 1968 Baron D55
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Pull them back too far up high and you lose the cabin pressure
At least in the several I flew.

Yeah, one of ours did that. It was a tired main door seal. If you wadded up a paper towel soaked in water and spread it out over the leak it would freeze and seal up. The boss eventually broke down and got a new door seal.

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 Post subject: Re: Learjet 23 Restoration
PostPosted: 11 Jan 2024, 23:06 
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Joined: 09/09/14
Posts: 785
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Location: Grove Airport, Camas WA
Aircraft: Cub, Stearman
Here’s a shot of N1965L at Van Nuys back in the day. No captions need for the two gentlemen.

It should be noted that Frank’s mother was killed when his 23 (N9FS) CFIT’d into Mt. San Jacinto with his pilots trying to pick up their IFR clearance.


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 Post subject: Re: Learjet 23 Restoration
PostPosted: 11 Jan 2024, 23:29 
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Joined: 10/10/14
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Location: St George UT
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No pic here but yes I remember that crash well.


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 Post subject: Re: Learjet 23 Restoration
PostPosted: 12 Jan 2024, 10:04 
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Joined: 09/21/16
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Location: KSYR
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Username Protected wrote:
...the GE powered jets (25’s to be specific) are best flight planned at 22/20/18. Don’t pull them back to idle at 390 or 410 unless you knew you had landing weather above mins.
Those numbers are very similar to the P&W JT-12 powered Sabreliners. Similar flight profile, albeit with less climb performance than the Lears. Climb as high as possible, as quickly as possible, and descend as late as possible. Fuel flows on takeoff or go-arounds would cause your eyes to bug out... Those Jurassic jets were a blast to fly!

Greg


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 Post subject: Re: Learjet 23 Restoration
PostPosted: 12 Jan 2024, 13:03 
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Joined: 05/11/11
Posts: 150
Post Likes: +181
Company: Technik Packaging Machinery
Location: Atlanta, GA area
Aircraft: Cessna 414
Jurassic jets. I love it.
About my proudest aviation moment was getting my LR-JET type rating. This thread got me looking through old pics. Here's one of a 25 panel in one I got to fly. Fast, noisy, thirsty, crude by today's standard avionics, but what a blast to be the pilot of one.


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