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Joined: Wed Jun 30, 1999 3:37 am

DC-8 Series 70 Conversions

Wed Jul 25, 2001 2:10 am

Can anyone give me some information about the DC-8's that several of the overnight delivery firms use, such as Airborne Express and Emery? Were any structural modifications made to the airframe or wings when the CFM56 engines were installed? What performance improvements were realized above and beyond fuel efficiency? Does the upgrade allow the aircraft to use airports with shorter runways? Any information would be appreciated.
Posts: 6148
Joined: Fri Sep 17, 1999 7:43 am

RE: DC-8 Series 70 Conversions

Thu Jul 26, 2001 2:47 am

You didn't mean Airborne, did you?

RE: DC-8 Series 70 Conversions

Thu Jul 26, 2001 12:23 pm

i used to work on them at Dalfort Aviation. they all belong to UPS. it has been about 10 years, but the aircraft was made longer and the plyons were redone to take the engines. I like working on them. most of it was made up with cables and hydraulics.
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Joined: Tue May 18, 1999 6:40 am

RE: DC-8 Series 70 Conversions

Thu Jul 26, 2001 1:31 pm

I can't answer these specific questions being asked but I can tel you that the airplane wasn't stretched.

The 71's are the same legnth as the 61's.

The 72's are the same legnth as the 62's.

The 73's are the same legnth as the 63's.

UPS doesnt have all of them either. They are everywhere.

Some operators include...

MAS Cargo
NASA Langley Research
Emery Worldwide
Tampa Columbia

And a few others.

The DC8s were converted by Cammacorp and were brought back to zero time airframes.

Airborne only has 50/60 series DC8's. No converted 70's.

There was no increased MGTOW increase even though thrust was substantially increased from 18,000- 24,000 pounds of thrust per engine.

This doesnt answer any of your questions but it may help.


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