The two PW 4000 models are pretty similar I think. About as much as the CF6 models.
The RR Trents are another story. Right now with the 777, A330Neo, A350 we have three different Trent products. We have never worked the 777 model in house. Another hit against the 777. The A330Neo version is a close cousin to the 787 motor and the A350 is quite a bit different from those two. All three of those models are in house or are on the plan to come in soon.
Retiring the 777 gets the only two engines out of the fleet that does not get worked on at Delta. Less outside work.
That is good to know. Thanks for the insight, I've never been an expert on engines. I thought that at least the Trent XWB on the 350 and the Trent 7000 on the A330neo would share more than a few parts.
The PW4000s are actually quite different. There were 3 major variants of the PW4000, the 94 inch, 100 inch, and 112 inch fan versions. The 94 inch version was used on the A300-600/A310/747-400/767-200/767-300/MD-11 and largely interchangeable between the different aircraft by changing out the mounting brackets/accessories/thrust rating plugs. The 100 inch version was bespoke to the A330 and the 112 inch version was bespoke to the 777-200/200ER/300.
The Trent 7000 is the bleed-air version of the Trent 1000 TEN used on the 787, which in turn has a few major differences in the core with the Trent XWB. The most significant difference is the 2 stage intermediate pressure turbine on the XWB vs. a single stage on all other versions of the RB211/Trent engines.
Wow, very detailed. Thank you.
So by 2023 DL fleet will look like this?
- 737, 738, 739
- 332, 333, 339
- MD88, MD90, 717
- 319, 320
- 763, 764
I don't think that any 319, all 320, all 752 and 763 will be gone by 2023. And what about the 753? I think it is missing on your overview.
Correct me if there is evidence that I'm wrong, because normally I just have some detailed knowledge about the LH Group but I think the DL fleet in 2023 will look:
- all 220-100 and -300 (delivery as planned)
- all A319
- half of the 320
- all A321 + A321neo (delivery as planned, starting next year)
- all A330-200, -300 and -900 (delivery as planned)
- all A359 (delivery as planned)
- all 737-700, -800 and -900ER
- 1/3 of the 752 (long term replacement by A321neo)
- all 753
- 1/2 of the 763
plus maybe the first 4-5 aircraft of a 320/738 replacement (A320neo or 737-8)
AB6 - A319 - A320 - A321 - A333 - A388 - AT42 - 733 - 734 - 735 - 73H - 738 - 752 - 753 - 763 - 772 - DC10 - MD83