Bobs89irocz
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Posts: 599
Joined: Fri Aug 22, 2003 4:52 am

FedEx 727 Question?

Mon Oct 06, 2003 5:39 am

I was looking at some pictures some FedEx 727 and i came across the airplane N217FE. It was The last 727 built back in 84 but a few years ago (dont remember how long ago) it had and engine mod done. It now has the same series engines the MD-80's have. It had a great shot of the #1 engine but i couldnt see the #2 engine very well but it appeard that it didnt have the engine that sits in the back of the tail anymore. Like that have the same engine set up as the MD-80. Is this accurate? Am i looking at the picture right? I always thought it would have been really sweet for someone to mod the 727 to a twin and make it more efficient so it would probably fly longer. Will someone verify this for me. Thanks

Bobby
 
calpilot
Posts: 881
Joined: Sun Oct 17, 1999 5:16 am

RE: FedEx 727 Question?

Mon Oct 06, 2003 6:31 am

The #2 is either a JT8D-15 or -17. Is that what you were asking?
 
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yyz717
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RE: FedEx 727 Question?

Mon Oct 06, 2003 6:39 am

This 722F is one of 11 that Fedex operate that underwent the Valsan conversion. Basically, the 2 outboard engines were replaced with JT8D-200 with the MD-80 nacelle. The #2 engine remained the same JT8D-15 or -17.

I dumped at the gybe mark in strong winds when I looked up at a Porter Q400 on finals. Can't stop spotting.
 
Bobs89irocz
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RE: FedEx 727 Question?

Mon Oct 06, 2003 6:45 am

THe Valsan conversion yes, thats what i was thinking of. So they just replaced the Outboard engines (1 and 3) with the MD-80 engines (pratt JT8D-200's) and left the #2 engine the same. Wouldnt that cause some problems? The performance of the plane would be really different also? I could see it work but is it efficent? Thanks

Bobby
 
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yyz717
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RE: FedEx 727 Question?

Mon Oct 06, 2003 6:58 am

The Valsan conversion is considered technically successful although only a handful of 722's (and at least 1 721) underwent the conversion. Valsan went out of business but the concept was resurrected under the "Super 27" program.

The remaining #2 engine was derated to reduce thrust and engine noise, afforded by the more powerful #1/3 powerplants.

I dumped at the gybe mark in strong winds when I looked up at a Porter Q400 on finals. Can't stop spotting.
 
pilottim747
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RE: FedEx 727 Question?

Mon Oct 06, 2003 10:19 am


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SkydrolBoy
Posts: 334
Joined: Sun Sep 21, 2003 7:31 am

RE: FedEx 727 Question?

Tue Oct 07, 2003 4:35 am

The #2 Engine was not derated to reduce thrust and noise. The reason it is still a -15 or -17 is the fact that the -217's will physically not fit in the number 2 position, to put a -217 engine there would have required a completely new "S" duct along with extensive structural modifications through out the tail to fit a larger "S" duct. It was simply not cost effective. Another problem is the fact that the #2 engine has a tendency to compressor stall, and with a -217 engine placed in the #2 spot would have increased the frequency of compressor stalls...
 
gigneil
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RE: FedEx 727 Question?

Tue Oct 07, 2003 5:27 am

It looks like the tail cone has been replaced with an almost nonexistant opening.

N
 
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yyz717
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RE: FedEx 727 Question?

Tue Oct 07, 2003 9:53 am

I remember reading the specs on the Valsan conversion program years ago. I thought the #2 was derated to reduice noise to Stage III and because the JT8D-200's provided more thrust so less was needed from #2. I could be wrong.

I dumped at the gybe mark in strong winds when I looked up at a Porter Q400 on finals. Can't stop spotting.

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