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frankhenderson
Topic Author
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DC-8 Question

Mon Mar 07, 2005 12:11 am

I am confused about DC-8s. What turns a DC-8-61 into a DC-8-71? I thought most aircraft that get new dash numbers just meant the length changed, i.e. 777-200 & 777-300. The DC-8 does not seem to follow this logic except with the first models.

Can someone please help?
 
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Starlionblue
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RE: DC-8 Question

Mon Mar 07, 2005 12:28 am

Version numbers frequently refer to the length, but not always. According to my Douglas Jetliners book, the -70 version was conceived to meet noise regulations, and the aircraft have high-bypass turbofans (CFM56). So the -70s are reengined -60s.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
FlagshipAZ
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RE: DC-8 Question

Mon Mar 07, 2005 12:33 am

Starlionblue is correct. 110 of the DC-8 series -61,-62 & -63s were converted into the -71, -72 & 73 series. The original JT8Ds motors were swapped out for the CFM56s, along many other minor changes as well. United & Delta were the 2 biggest original users of the -70s...UA having 29 -71s & DL having 13 -71s.
Regards.
"Beer is living proof that God loves us and wants us to be happy." --Ben Franklin
 
dtw9
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RE: DC-8 Question

Mon Mar 07, 2005 12:37 am

FlagshipAZ is almost correct. It was the JT3's that were swapped out
 
NWAFA
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RE: DC-8 Question

Mon Mar 07, 2005 1:11 am

My all time favorite a/c. UA's stretch with the orange paint job looked the best!!!
THANK YOU FOR FLYING NORTHWEST AIRLINES, WE TRULY APPRECIATE YOUR BUSINESS!
 
MD80Nut
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RE: DC-8 Question

Mon Mar 07, 2005 3:24 am

United's stretched DC-8s did look great with the CFM engines. I think the 70s are the best looking DC-8s. A lot quieter too from the ground. Unfortunately, I've never flown in a -70.  sigh 

Cheers, Ralph
Fly Douglas Jets DC-8 / DC-9 / DC-10 / MD80 / MD11 / MD90 / 717
 
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asqx
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RE: DC-8 Question

Mon Mar 07, 2005 3:27 am

Quoting Frankhenderson (reply 0):
What turns a DC-8-61 into a DC-8-71? I thought most aircraft that get new dash numbers just meant the length changed, i.e. 777-200 & 777-300. The DC-8 does not seem to follow this logic except with the first models.


Actually, the original DC-8s all had the same fuselage length and wingspan but were given different designations based on engines and available weights. The original DC-8 Series 10 used JT3Cs and was marketed for the US domestic market. The Series 20 used JT4Cs and was intended for the overwater or international market. The Series 30 was an improved and heavier version of the Series 20. The Series 40 was a available in weights similar to the Series 30 but featured Rolls Royce Conway turbofan engines. The Series 50 featured JT3D turbofan engines.

The "Super 60" Series came in two lengths. The DC-8-61 had a much lengthened fuselage but retained the wing and engine nacelles of the Sereis 50. The DC-8-62 had a longer wing span, aerodynamically improved engine nacelles and pylons and fuselage shorter than the DC-8-61 but slightly longer than the original Series 10 thru 50. The DC-8-63 matted the wings and engine nacelles from the DC-8-62 onto the longer fuselage of the DC-8-61.

As stated before, the "Super 70" Series are DC-8-61s, -62s, and -63s that have recieved CFM-56 engines and a few other modifications.
 
PanAm747
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RE: DC-8 Question

Mon Mar 07, 2005 3:46 am

I have to admit, all y'all have explained it quite well - can't think of anything to add, except these pictures:


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Photo © Frank C. Duarte Jr.
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Photo © Frank C. Duarte Jr.




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Photo © Ernie Viskupic



You can tell by looking the difference between a -60 series engine (fairly small diameter) to the much larger (and to me, more aesthetically pleasing) diameter -70 series:


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Photo © Frank C. Duarte Jr.
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Photo © Frank C. Duarte Jr.



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Photo © Frank C. Duarte Jr.



 veryhappy 
Pan Am:The World's Most Experienced Airline - P(oor) S(ailor's) A(irline): San Diego's Hometown Airline-Catch Our Smile!
 
frankhenderson
Topic Author
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RE: DC-8 Question

Mon Mar 07, 2005 4:01 am

Thanks to all...I appreciate your help.
 
m404
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RE: DC-8 Question

Mon Mar 07, 2005 5:05 am

My favorite jetliner. Just a beautiful (big windows) ship. Standing under those huge wings was a trip unto itself.

Now to fantasy flights .. How about a -50 then a -70 with blended winglets. Wow.
Less sarcasm and more thought equal better understanding
 
N766UA
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RE: DC-8 Question

Mon Mar 07, 2005 6:04 am

As said above, it's just the engines that make the difference. At UPS, all the stretch -8s are designated either -71 or -73, but they're really just ex-United and Delta -61s and -63s.
 
StevenUhl777
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RE: DC-8 Question

Mon Mar 07, 2005 6:22 am

Of all the aircraft my Dad worked on in his 36 years as a mechanic at UA, the DC-8 is by far his favorite plane. He always admired how well it was built and how easy it was to work on, and missed it great after it was retired.

The DC-8 was a great plane to fly on (at least on UA) and they had huge leather seats in first. I flew PDX-DEN, PDX-ORD, and PDX-SFO on DC-8's.
And the winner for best actress is....REESE WITHERSPOON for 'Walk the Line'!!!!!!!!
 
N766UA
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RE: DC-8 Question

Mon Mar 07, 2005 7:49 am

Here's a great comparison shot of the -61 becoming the -71... even the same tail number:

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Photo © Frank C. Duarte Jr.



View Large View Medium
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Photo © Frank C. Duarte Jr.

 
aeroweanie
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RE: DC-8 Question

Mon Mar 07, 2005 8:43 am

Asqx:

One tiny correction. Airborne Express later fitted the pylons from -62s and -63s that had become -72s and -73s on to their -61s. I heard that it was worth 1% or so in cruise.
 
timz
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RE: DC-8 Question

Mon Mar 07, 2005 9:34 am

"Actually, the original DC-8s all had the same fuselage length and wingspan..."

almost the same span.

"The Series 20 used JT4Cs and was intended for the overwater or international market."

JT4A's, you mean. As I recall the -20 was bought only by US domestic airlines; it was the -30/-40 that was the heavier intercontinental version.
 
lat41
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RE: DC-8 Question

Mon Mar 07, 2005 9:43 am

Some very smart looking 8's around including UPS's and ATI's today. Did they have some meaningful avionics and flight engineering changes as well?
 
B707Stu
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RE: DC-8 Question

Mon Mar 07, 2005 9:48 am

I flew the stretch-8 LAX-PDX once. Amazing take off and climb, felt like a rocket. Naturally, as you can tell by my name, I'm a 707 guy and always view the 8's as inferior. Though I must confess there was something elegant about those pencils.
 
N766UA
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RE: DC-8 Question

Mon Mar 07, 2005 9:58 am

UPS' DC-8s are 2 person crews and have half-glass cockpits much like the 737-500, for example.
 
nwafflyer
Posts: 888
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RE: DC-8 Question

Mon Mar 07, 2005 10:05 am

Kudo's to Douglas Corporation -- look at the aircraft they've built that have made history -- the DC 3 is a good starting point -- old enough to be a great grandfather, and still flying today. The DC - 8 -- still being used for cargo, and of course, the DC-9 and DC-10. Both old enough to be a young grandparents, and both carrying us all over the world. Hopefully, the Douglas aircraft will be around for another 20 or 30 years (or at least as long as I keep flying). Now, I'd love to fly on a DC-8 (I've flown on the 3, 4, 7, 9 and 10) - any idea how I can manage that?
 
PSAjet17
Posts: 375
Joined: Thu Dec 11, 2003 5:50 am

RE: DC-8 Question

Mon Mar 07, 2005 10:29 am

I worked for Delta Air Lines the summer of 1973 in SAN as an operations agent. Part of my job was to stand on the tug and marshall the arriving aircraft into the gate. Most of the arrivals were all DC-8-51s. One night the 3:30am arrival was fogged out of SAN and ferried down later in the morning. It was a 63. I remember standing on the ramp and watching what seemed to be an immense length of airplane turn off the runway and begin taxiing towards the gate. I got on the tug and became mesmerized as I watch 187ft of airplane turn down that yellow line and head towards me. He was more than halfway down the line before I remembered what I was supposed to be doing and started hand signalling him to the gate.
 
timz
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RE: DC-8 Question

Mon Mar 07, 2005 10:31 am

Pretty sure neither DL nor UA ever had a -63.
 
hirisk
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RE: DC-8 Question

Mon Mar 07, 2005 10:32 am

nwaflyer,

get your pilots licence and hope to get hired by UPS or DHL.  smirk 
happy contrails
 
nwafflyer
Posts: 888
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RE: DC-8 Question

Mon Mar 07, 2005 10:43 am

OH please, there must be somewhere I can go to fly as a passenger --
 
dtw9
Posts: 1011
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RE: DC-8 Question

Mon Mar 07, 2005 11:28 am

I've been lucky enough to have a number of flights on the 8. First flight ever was on a brand new Delta DC-8-61, then a Delta 8-52. Flew to Europe Cattlecar on a Capitol DC-8-61,and back on a very foul smelling DC-8-63CF of ONA. I think the 63F had just got done flying cattle before it came to get us. I also have a very good freind who at this time is a DC-8 PIC for Murray Air at KYIP. Was able to do a trip with him last year, much nicer veiw up front
 
n907cl
Posts: 246
Joined: Tue Feb 20, 2001 1:34 pm

RE: DC-8 Question

Mon Mar 07, 2005 11:41 am

Quoting N766UA (reply 10):
At UPS, all the stretch -8s are designated either -71 or -73, but they're really just ex-United and Delta -61s and -63s.


UPS doesn't operate any Ex-United DC-8-71s.

Quoting Timz (reply 20):
Pretty sure neither DL nor UA ever had a -63


That is correct.

Here is some more information at Fred Cox DC-8 Jet Collection site on the conversions.
Brian
 
dc8jet
Posts: 329
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RE: DC-8 Question

Mon Mar 07, 2005 11:48 am

Timz is correct neither DL or UA ever operated the 63. Speaking of Murray Air there has been an all white 70 series sitting at YIP for several weeks now. Wonder if Murray is going to operate it.
 
dtw9
Posts: 1011
Joined: Mon Sep 22, 2003 10:09 am

RE: DC-8 Question

Mon Mar 07, 2005 11:53 am

I've heard that Murray was picking up a third, didn't know it would be a -70. They recently got their part 121 and have gone Worldwide so I would'nt doubt that it's their's, but I'll check with my freind
 
Bryanp292
Posts: 5
Joined: Mon Mar 07, 2005 2:51 pm

RE: DC-8 Question

Mon Mar 07, 2005 3:14 pm

Might want to hurry about getting a pilot's license and getting hired on at UPS. I work at the UPS hub here in Louisville, KY for a "Belly" crew that loads the aircraft. We were told Monday of last week, that a lot of our DC-8 flights (example: Memphis, Charlotte, JFK, etc..) were going to be replaced by A300s by at least August. No idea what is going to happen to the DC-8s. The last two Weeks alone, my crew and I had to do tail swaps on 4 DC-8s that had returned due to mechanical failure.
 
MEA-707
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RE: DC-8 Question

Mon Mar 07, 2005 9:22 pm

True passenger ops by DC-8 stopped in 1996 unfortunately. The first chance since then is now offered by http://www.airevents.com to make a pleasureflight with a DC-8-72 from Basle. I booked of course and hope you will as well.
nobody has ever died from hard work, but why take the risk?
 
air2gxs
Posts: 1443
Joined: Mon Jun 18, 2001 1:29 pm

RE: DC-8 Question

Mon Mar 07, 2005 10:06 pm

Quoting N766UA (reply 17):
UPS' DC-8s are 2 person crews and have half-glass cockpits much like the 737-500, for example


UPS DC8's are still 3 man crews. The engineer's panel hasn't really changed at all (from -61 -63), except for air conditioning & engine instruments. We also added a digital fuel quantity system.

The pilot's stations do have a EADIs & EHSis and several more enhancements.

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