Gigneil From United States of America, joined Nov 2002, 16215 posts, RR: 88 Posted (10 years 4 months 2 weeks 3 days 2 hours ago) and read 879 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?
LY744 From Canada, joined Feb 2001, 5536 posts, RR: 11 Reply 1, posted (10 years 4 months 2 weeks 2 days 12 hours ago) and read 810 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.
Gigneil From United States of America, joined Nov 2002, 16215 posts, RR: 88 Reply 2, posted (10 years 4 months 2 weeks 2 days 12 hours ago) and read 810 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.
Gigneil From United States of America, joined Nov 2002, 16215 posts, RR: 88 Reply 4, posted (10 years 4 months 2 weeks 2 days 11 hours ago) and read 789 times:
The 5A is the older engine, the 5B is the newer engine.
LY744 From Canada, joined Feb 2001, 5536 posts, RR: 11 Reply 5, posted (10 years 4 months 2 weeks 2 days 10 hours ago) and read 777 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.
Gigneil From United States of America, joined Nov 2002, 16215 posts, RR: 88 Reply 6, posted (10 years 4 months 2 weeks 2 days 10 hours ago) and read 776 times:
How interesting. That explains why the A319 is the only one out of wack like that.
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