Sponsor Message:
Civil Aviation Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
A319 CFM Model Numbers Backwards  
User currently offlineGigneil From United States of America, joined Nov 2002, 16347 posts, RR: 85
Posted (11 years 6 months 1 week 1 day 21 hours ago) and read 1250 times:

Has anyone ever noticed that an A319 with a CFM56-5A5, for example, is an A319-114, but one with a CFM56-5B6/P, a newer and more modern engine, is an A319-111?

I thought Airbus used the final field for engine revision number... did they renumber them suddenly or did they start off with the CFM56 engines numbered higher to lower?

N

7 replies: All unread, jump to last
 
User currently offlineLY744 From Canada, joined Feb 2001, 5536 posts, RR: 10
Reply 1, posted (11 years 6 months 1 week 1 day 8 hours ago) and read 1181 times:

I believe only the middle digit refers to the engine (its manufacturer to be precise). The 3rd one is supposed to represent some sort of non-engine related customer revisions, AFAIK.

LY744.



Pacifism only works if EVERYBODY practices it
User currently offlineGigneil From United States of America, joined Nov 2002, 16347 posts, RR: 85
Reply 2, posted (11 years 6 months 1 week 1 day 8 hours ago) and read 1181 times:

LY744-

No, the last digit does refer to engine version. For example the A330-343 is a Trent 772B-60, while the A330-342 is a Trent 772-60, and the A330-243 is a PW4168A while the 242 is a PW4168.

And so on.

N


User currently offlineLY744 From Canada, joined Feb 2001, 5536 posts, RR: 10
Reply 3, posted (11 years 6 months 1 week 1 day 7 hours ago) and read 1169 times:

I stand corrected.

BTW, a -111 is a -5B5, a -112 is a -5B6/P. -113 = -5A4, -114 = -5A5. If the B5s and B6/Ps are indeed older versions, than it is truly very odd.  Smile

LY744.



Pacifism only works if EVERYBODY practices it
User currently offlineGigneil From United States of America, joined Nov 2002, 16347 posts, RR: 85
Reply 4, posted (11 years 6 months 1 week 1 day 7 hours ago) and read 1160 times:

The 5A is the older engine, the 5B is the newer engine.

N


User currently offlineLY744 From Canada, joined Feb 2001, 5536 posts, RR: 10
Reply 5, posted (11 years 6 months 1 week 1 day 6 hours ago) and read 1148 times:

The first A319s delivered were powered by the 5B (A319-111, A319-112), and the 5As appeared later on. Therefore, the chronological system remained in place. The conclusion is that the 5A4 and 5A5 CFM-56's that are used on the A319 are less powerful, but they are actually newer than the 5B5's and 5B6's. The 5A1 is the original version for the A320 family dating back to the late 80's. For whatever reason Airbus/CFM added the 5A's to the A319 as an option, perhaps due to airlines seeking extra commonality with their older A320's, or perhaps due to acquisition/operation costs.

LY744.



Pacifism only works if EVERYBODY practices it
User currently offlineGigneil From United States of America, joined Nov 2002, 16347 posts, RR: 85
Reply 6, posted (11 years 6 months 1 week 1 day 6 hours ago) and read 1147 times:

How interesting. That explains why the A319 is the only one out of wack like that.

Northwest's have 5As, but they're one of the few.

Heh how did you find this out?

N


User currently offlineLY744 From Canada, joined Feb 2001, 5536 posts, RR: 10
Reply 7, posted (11 years 6 months 1 week 1 day 6 hours ago) and read 1141 times:

I looked on Bill Harm's census list, searched in the Tech Ops forum, (which brought me to this site), and the CFM website.  Smile

LY744.



Pacifism only works if EVERYBODY practices it
Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Boeing And Airbus Aircraft Model Numbers posted Sat Apr 1 2006 00:22:53 by MaxQ2351
Lockheed Model Numbers posted Mon Oct 31 2005 11:22:55 by Caboclo
A/C Model Numbers posted Tue Oct 11 2005 06:24:48 by SirOmega
Boeing And Airbus Model Numbers posted Sun Aug 28 2005 22:16:17 by Aman777
Aircraft Model Numbers posted Sat Aug 27 2005 22:43:59 by Jamesbuk
Airbus Aircraft Model Numbers posted Wed Jun 22 2005 21:27:27 by Petera380
Why The "20" In 707 Model Numbers? posted Thu Apr 7 2005 18:46:57 by Duke
Airbus Model Numbers posted Fri Mar 21 2003 03:58:28 by QB737
Model Numbers posted Tue Jul 24 2001 04:42:04 by VH-KCT*
Boeing 747 Model Numbers posted Sun Jun 10 2001 00:50:14 by United747-200