Western737
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NWA DC-10-40

Wed Nov 20, 2002 11:01 pm

Last night we viewed several videotapes of our trips on NWA DC-10-40 and DC-10-30. We noticed that the 40 series has the leading fin on engine moved few inches clockwise - leaving old mark where fin once attached to. We dont see any change on 30 series. We are hoping to find out why they done only on 40 series, not on 30 series? Anyone know or has the answer to this?
 
TR
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RE: NWA DC-10-40

Wed Nov 20, 2002 11:13 pm

Probably due to the fact that all DC-10 series 30 are all powered by General Electric engines and the series 40 by Pratt & Whitney. The engines are not completely alike in their external design which could be the answer to your question.

Series 30 & 40

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Photo © Miguel Snoep
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Photo © William Appleton


Series 40 with series 30 behind

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Photo © Colin Parker

 
Western737
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RE: NWA DC-10-40

Wed Nov 20, 2002 11:30 pm

I am not speaking of engine cowling on tail. I am speaking of small fins "shark-like" attached to No. 1 and No. 3.
 
XFSUgimpLB41X
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RE: NWA DC-10-40

Thu Nov 21, 2002 12:10 am

Not really related to the question... but man.. I am really going to miss seeing those beautiful planes....
Chicks dig winglets.
 
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ATA L1011
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RE: NWA DC-10-40

Thu Nov 21, 2002 12:11 am

TR both of those aircraft pix are series 30 models with 2 different versions of the GE engine. The way to tell is the way to tell all 40's have the trumpet shape #inlet. Western most 30's have that little fin as well on the 1 and 3 engines, if you look closely at the pix of the 30 in TR's pix you will notice that it has it as well.
Treat others as you expect to be treated!
 
favre
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RE: NWA DC-10-40

Thu Nov 21, 2002 6:41 am

Western--it was moved for performance increases....
BAE 146 ARJ CV-580 YS-11 SH360 DASH8 SAAB340 EMB 120-135-145-175 DC9/10/30/40/50 MD80/90 DC10 717 727 737 747 757 767 77
 
Western737
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RE: NWA DC-10-40

Thu Nov 21, 2002 8:25 am

Favre, what kind of performance? Fuel efficient?

My question was just wondering why it was moved on 40 series only, not on 30 series?

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