Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Classic 747 Engines  
User currently offline744lover From United States of America, joined Nov 2000, 187 posts, RR: 0
Posted (10 years 7 months 4 weeks 1 day 5 hours ago) and read 2717 times:

Hi there,

Today while checking some pictures from LV-MLO at EZE, I found something that I didn't saw before. Browsing though the database, I found that the same aircraft had different kind of engines through its life. Is it common for an airline change the engines from their planes??? I mean, chage the type of the engines (i.e. from CF6 to JT9D and so on)


View Large View Medium
Click here for bigger photo!

Photo © AirNikon


View Large View Medium
Click here for bigger photo!

Photo © Ted Quackenbush


View Large View Medium
Click here for bigger photo!

Photo © Frank Schaefer



See ya,
GHN

10 replies: All unread, jump to last
 
User currently offlineBio15 From Colombia, joined Mar 2001, 1089 posts, RR: 7
Reply 1, posted (10 years 7 months 4 weeks 1 day 4 hours ago) and read 2626 times:

B747Skipper seems to be gone for a long time!  Sad


saludos
-Alfredo


EDIT: Forgot to mention the only thing I know about the subject, the older engines are JT-9Ds.

[Edited 2004-02-05 18:28:35]

User currently offlineAir1727 From , joined Dec 1969, posts, RR:
Reply 2, posted (10 years 7 months 4 weeks 1 day 4 hours ago) and read 2611 times:

Actually, the top photo which looks like a CF6 is a rare JT9D model called the -70A. Flying Tigers was one of the users of that powerplant and they leased that airplane several times from Aerolineas which is why you see -70As and -7Qs on the same airplane over time. But the actual engine manufacturer did not change. The -70A was, at the time of its release, the only 53000lb option from Pratt & Whitney for the 747. The extended cowl was built by ROHR (well known hush dynamic engineering firm) and was marketed as a "common nacelle" intended to fit on the DC-10-40 as well. The powerplant also had a slightly different accessory section location than the normal JT9D. Because of the increased drag and lower ground clearance, it was not popular and the engine was brought back to the standard design and dubbed the -7Q.

User currently offlineStormin From United States of America, joined Sep 2001, 60 posts, RR: 0
Reply 3, posted (10 years 7 months 4 weeks 1 day 3 hours ago) and read 2596 times:

hehe... someday I'll be able to take month-long holidays like the skipper.... might require me to move to Europe, but someday!


(edit: of course skipper is living in South America now... maybe I'll move down there)

later

[Edited 2004-02-05 19:33:23]

User currently offlineAvioniker From United States of America, joined Dec 2001, 1109 posts, RR: 11
Reply 4, posted (10 years 7 months 4 weeks 1 day 2 hours ago) and read 2579 times:

To answer your question in the simplist terms: NO
It involves pylon change, support systems and wiring and way too many things to talk about here.



One may educate the ignorance from the unknowing but stupid is forever. Boswell; ca: 1533
User currently offlineAa61hvy From United States of America, joined Nov 1999, 13977 posts, RR: 57
Reply 5, posted (10 years 7 months 4 weeks 1 day ago) and read 2548 times:

I thought the GE version has 5,000lbs more thrust than the PW version? Either way the Pw version sounds nicer!


Go big or go home
User currently offlineTimz From United States of America, joined Sep 1999, 6837 posts, RR: 7
Reply 6, posted (10 years 7 months 4 weeks 23 hours ago) and read 2526 times:

Okay, so this 747 was always P&W, right? And a few 747s changed from P&W to GE, back in the 90s. Did any ever change from GE to P&W?

User currently offlineMusang From United Kingdom, joined Apr 2001, 864 posts, RR: 7
Reply 7, posted (10 years 7 months 3 weeks 1 day 5 hours ago) and read 2261 times:

re. the original question - not common for an airline to change engine types itself, but examples of re-engining fleets include RR Tay on 727s, CFM-56 on DC-8s and C-135s, and JT-3-200?? on 727 positions 1 and 2.

The Tu-144 used a few years ago for the NASA tests used engines from a Blinder bomber IIRC but thats off the point.

Regards - Musang


User currently offlineGordonsmall From UK - Scotland, joined Jun 2001, 2128 posts, RR: 21
Reply 8, posted (10 years 7 months 3 weeks 1 day ago) and read 2237 times:

Didn't Atlas Air get a few 742's converted from P&W to GE?

Regards,
Gordon.



Statistically, people who have had the most birthdays tend to live the longest.
User currently offlineB747skipper From , joined Dec 1969, posts, RR:
Reply 9, posted (10 years 7 months 2 weeks 2 days 6 hours ago) and read 2075 times:

Hola Amigos -
xxx
Do you mind if I rest a little bit on the beach...?
xxx
LV-MLO was often leased to FTL as their passenger aircraft for military "MAC charters" in the 1980s, and got fitted at one time with JT9D-70A engines, as FTL had inherited with their merge (SWA) of a few 747-245F which had these engines. That was before my start here in Argentina...
xxx
The JT9D-70A reversers have bad reputation, some operators went as far as asking crews not to operate reversers unless absolutely necessary.
xxx
Correct, Atlas converted some of their P&W 747 with GE CF6 engines. To do so they acquired some old ex-ANA 747-181 parked in the desert, took their engine mounts and struts to convert their P&W powered 747 to CF6 engines. This is the only airline that ever did such major change.
xxx
Aerolineas operated a CF6 powered 747 airplane at one time, it was on lease, in the early 1990s, from Varig... Nice engine, like it much (personal opinion).
xxx
Happy contrails  Smile
(s) Skipper


User currently offlineTrent900 From United Kingdom, joined Dec 2003, 532 posts, RR: 0
Reply 10, posted (10 years 7 months 2 weeks 2 days 2 hours ago) and read 2005 times:

Everyone seems to be forgeting the RR RB211. BA, Qantas and Cathay to mention a few used this make and model on the later classics.

Trent.


Top Of Page
Forum Index

Reply To This Topic Classic 747 Engines
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
747 5 Engines posted Mon Mar 8 2004 14:31:33 by A340600
747 Engines Question posted Thu Apr 3 2003 21:32:25 by S.p.a.s.
Diff P&W's On Classic 747 posted Sun Oct 21 2001 04:40:03 by Rmm
Dimensions Of 747-engines. posted Mon Jul 30 2001 12:41:59 by Na
747 Classic Engines posted Thu Sep 27 2001 13:39:21 by Salim
747 Gliding On No Engines - New Incident posted Sat Jan 14 2006 11:49:10 by Julesmusician
Taxi-ing Techniques On Multi Engines Such As 747 posted Fri Nov 18 2005 19:37:31 by Julesmusician
747-300 With CF6-80 Engines posted Mon Dec 13 2004 04:47:38 by MrFord
SAA 747 With Different Engines posted Fri Apr 9 2004 23:24:09 by Eddieho
747-300 With 3 Engines? posted Tue Mar 9 2004 10:47:43 by Bookin

Sponsor Message:
Printer friendly format