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American Airlines B. 707-100B's And B.720B's.  
User currently offlineCV990 From , joined Dec 1969, posts, RR:
Posted (10 years 3 months 17 hours ago) and read 2813 times:


Hi!

I tried to check it out if there are any visual differences between both models that American used to fly in the past. Although we can see that all the B. 720B's they had didn't have the HF antenna in the tail, there were also some of their B. 707-100B's that didn't have them either, now how could you see the difference? By the registration or maybe looking to their wing roots or maybe the slats that both had. It looks to me that the B. 720B's had more slats than the old generation B. 707-120B's, is that true?
regards

7 replies: All unread, jump to last
 
User currently offlineJustplanesmart From United States of America, joined Mar 2001, 723 posts, RR: 2
Reply 1, posted (10 years 3 months 16 hours ago) and read 2785 times:

American 707-100B aircraft (and all 707-100, -200, -300 and -400) had two overwing exits on each side:

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Photo © Howard Chaloner



American 720B aircraft (and almost all 720) had only one overwing exit per side:

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Photo © George Canciani




"So many planes; so little time..."
User currently offlineDesertJets From United States of America, joined Feb 2000, 7802 posts, RR: 16
Reply 2, posted (10 years 3 months 15 hours ago) and read 2745 times:

...but with any good Boeing there are exceptions to the rule.

I believe Eastern had their 720s delivered with 4 overwing exits (unfortunately my source book is at home and I am at work). Another means of checking, depending on the model, is the number of turbocompressors. 720s for sure had 2... the bigger 707s had 3, but there were exceptions to that rule as well. Search in tech/ops using "707 engine pylons" to be sure, it has been discussed in detail over there.



Stop drop and roll will not save you in hell. --- seen on a church marque in rural Virginia
User currently offlineYyz717 From Canada, joined Sep 2001, 16335 posts, RR: 56
Reply 3, posted (10 years 3 months 13 hours ago) and read 2707 times:

The 701 was slightly longer. 7 windows in front of the wing. The 720 had only 6.

Another means of checking, depending on the model, is the number of turbocompressors. 720s for sure had 2... the bigger 707s had 3, but there were exceptions to that rule as well.

I thought only the 707-320B/C had 3 turbocompressors? I know there were exceptions as you said.



[Edited 2004-08-31 17:42:26]


Panam, TWA, Ansett, Eastern.......AC next? Might be good for Canada.
User currently offlineFlagshipAZ From United States of America, joined Jan 2001, 3419 posts, RR: 14
Reply 4, posted (10 years 3 months 13 hours ago) and read 2703 times:

Another way to tell is by the registration number. American had 56 707-123s, 46 707-323s, 1 707-385 & 25 720-023s. Here's a link to all of AA's 707/720 registrations. http://www.geocities.com/~aeromoe/fleets/aa.html
Regards.



"Beer is living proof that God loves us and wants us to be happy." --Ben Franklin
User currently offlineIsitsafenow From United States of America, joined Feb 2004, 4984 posts, RR: 23
Reply 5, posted (10 years 3 months 7 hours ago) and read 2634 times:

DESERTJETS is correct on the EA 720's and the exit windows. Proctors book on the Boeing 720 points that out. The planes were ordered with high density 142 seat all coach seating, but EA never configured the 720's that way.
safe



If two people agree on EVERYTHING, then one isn't necessary.
User currently offlineCV990 From , joined Dec 1969, posts, RR:
Reply 6, posted (10 years 2 months 4 weeks 1 day 20 hours ago) and read 2514 times:

Hi!

Very good point Justplanesmart!!!! That's indeed a great way to see the difference between both models from AA. Now regarding the 4 exits specially for EA that's true too!
Great feedback guys, thanks a lot and regards.


User currently offlineDebonair From Germany, joined Jan 2004, 2460 posts, RR: 4
Reply 7, posted (10 years 2 months 4 weeks 1 day 14 hours ago) and read 2473 times:


...and what about the rear jet-escape-slide-exit?? which models operated with this feature??  Confused


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