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Al Mooney’s JetStar Retires


MooneyMitch

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Last JetStar Retires

December 31, 2019
5

Retirement came this week for what is believed to be the last flying Lockheed JetStar. An unnamed Florida family, which has been using it for the last three decades, has donated the four-engined bizjet to the Marietta Aviation History and Technology Center. Built in 1966, this JetStar has just short of 11,000 hours’ total time and was once owned by the Saudi royal family.

According to a report in the Marietta Daily Journal, the JetStar’s pilot, John Poffenbarger, has been flying the aircraft for the last 21 years and more than 3,000 hours. “We were able to preserve a piece of art,” he said after the Lockheed’s likely last flight on Monday. “The pilots I’ve talked to over the years have always had one common comment about Lockheed, that it was always the best flying aircraft,” Poffenbarger said. “I’m kind of jaded because for 21 years I’ve been flying this and I’ve become accustomed to it. She’s a crotchety old lady, she’s 53 years old, but she flew up here today just fine. Our director of maintenance Eric Boyd is a genius.”

The JetStar will be dismantled and moved to the museum, to be seen again sometime this summer. “There is already a JetStar at the museum, but it’s a little older, it’s not operational and it’s not in as good of a condition as this one,” Mark Morgan, the Marietta museum director, told the Daily Journal. The display will allow visitors to sit in the cockpit and sample the eight-seat interior.

Originally flown with two Bristol Siddeley Orpheus engines in 1957, the JetStar was re-engined with four Pratt & Whitney JT12As for production. N313JS had been re-engined with the quieter, more fuel efficient Garrett TFE731. 

JetStar.jpg

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I can’t imagine the gas bill to fuel this monster!Max out your credit limit with every fuel up!I saw an ad where Elvis old abandoned jet star was for sale recently...red velor upholstery,flat tires ,missing engines...300 k for the honor of owning a part of history 

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31 minutes ago, thinwing said:

I can’t imagine the gas bill to fuel this monster!Max out your credit limit with every fuel up!I saw an ad where Elvis old abandoned jet star was for sale recently...red velor upholstery,flat tires ,missing engines...300 k for the honor of owning a part of history 

Yep!  Saw it at Graceland a few years ago.......:D

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2 hours ago, thinwing said:

Land it at most stage 2 airports and recieve noise complaint fines

Actually this one is re-engined with TFE 731s. Stage 3 compliant. Sweet flying machine too. I amazed this one still flies. Most got drop sheared when they failed the "tank and plank" inspection.

The old -6 units were good flying too......once they finally left the ground.

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It gets expensive on a 731 JetStar. To work on just about anything on the inboard engines, even to replace a starter/generator requires removal of the outboard engine. I laughed when I read the MM because the first thing it always said on engine related work was, "If inboard engine, first remove outboard engine".

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  • 1 year later...

I have 2800 hours in the last flying Jetstar.... I designed the paint job and flew for the unnamed Florida family.  It was a great airplane.  Stable as all get out.  And regardless of modern technology the systems (controlled by switches and relays) were light years ahead of its time.  Regarding another post, you do not have to remove the engines to change the starter generator.... You simply drop the lower cowl... I had 5 s/gs... They last about 600-700 hours... I used to just take the high time one off of the airplane and send it out for O/H... There was a kit box in then hell hole.. I used to take the O/H sg on the road when I went to Europe.  The Apu had the same S/g but a slightly different P/N... In a pinch it could be used on an engine... Long live Kelly's memory... He was the best... 

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3 hours ago, George Elder said:

I have 2800 hours in the last flying Jetstar.... I designed the paint job and flew for the unnamed Florida family.  It was a great airplane.  Stable as all get out.  And regardless of modern technology the systems (controlled by switches and relays) were light years ahead of its time.  Regarding another post, you do not have to remove the engines to change the starter generator.... You simply drop the lower cowl... I had 5 s/gs... They last about 600-700 hours... I used to just take the high time one off of the airplane and send it out for O/H... There was a kit box in then hell hole.. I used to take the O/H sg on the road when I went to Europe.  The Apu had the same S/g but a slightly different P/N... In a pinch it could be used on an engine... Long live Kelly's memory... He was the best... 

Was that a 731 or a dash-8?

 

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2 hours ago, GeeBee said:

Was that a 731 or a dash-8?

 

5086 was a significant sn break... All the manuals have 5086 and subsequent (of 5162) in the instructions... They didn't have the jt12 - 8s (3300 lbs of thrust) but the airframe had all of the - 8 mods... Jt 12 - 6 had 3000lbs thrust.  It was either 5094 or 96 that came off the line as a - 8.  5086 on the data plate had - 6.  Of the 162 straight pipe jetstars 65 were converted to 731 by garret airresearch LAX.  5086 was the 45th one.  It was known as pick up unit # 45 and was owned by Johnson and Johnson at the time.  The 731 had 3700 lbs thrust.  500 gallons an hour for the airplane.  Lockheed started the line again in the 70's and made 40 JS 2 with 731's from the factory.  The only real way to tell the difference from the outside is the 2 has a dorsal inlet for ram air and the originals it was on each side in the pylon.... And the other difference was that the 2 had rounded cowlings underneath the engines  like a Falcon 50 the conversion cowl was sculpted to the accessory area...mine fit very well but some others struggled.  Just as a side note the aux tanks (the big bullets) on the straight pipe airplanes were sort off mid wing... Some on top some on bottom... On all of the 731 aircraft the tanks were dropped below the wing.  This was due to airflow interference for the outboard engines at high AOA. 

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One other interesting story... The Skunk Works took an off the shelf design to respond to the airforce request of a 4 engine utility aircraft contract.  P+W didn't have the engines available so Kelly decided to fly the airframe with the Orpheus engine... Approximatly the same total thrust... He said he was so happy with the Orpheus performance that he decided to make the pylons adaptable for either a two engine installation or a four engine installation.... He glowed with "and we could do all of this for only a 35lb built in weight penalty"...... Amazing

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I have to share my Jetstar -731 pictures.  My dad flew one as I grew up and it is the reason I became a pilot.  Nothing else like it.  His aircraft was modified with GPS and moving map display before it was scrapped once the owner died.  It was the first aircraft I actually got to fly at the controls of and I got 2 takeoffs and landings in.  Sadly, if I had one more landing, I'd apply to get the SIC type rating on my pilot cert. to save the memory forever.  This one was TCAS II and RVSM Certified.  Fun fact, there was a drogue chute!

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Edited by Will W
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