Well, to be fair, NEOs make up such a small percentage of our fleet, and even then, half of them were likely grounded at any one point. So the fact that ‘most of us never had issues with NEOs’ isn’t really saying much...

Over a decade on the IAE V2500 and NEVER had an engine problem but I keep taxiing past NEO's that are parked. I admit I'm not an expert on the topic so I can only rely on common sense and basic observational data. I just can't get the past the idea that a jet engine that is routinely being grounded might not be a good long term investment. I'm just a simple line pilot trying to make it to 65 and I am convinced it will be easier to finish out my career in a non NEO powered jet.

That's fair, but it would be nice to have real numbers to know if the NEO issues are really as bad as popular belief?

How about we let the engineers do their job and we’ll do ours.

That’s no fun.

Don't know how much they have improved, but last year ferried a NEO back from DEN to DFW after an engine swap due to vibrations. Had MX on board, they told me the engine they put on that one was really meant to be put on the one without engines in DFW. They also told me that the 4 flying NEOs we had at that point had had something like 17 engine swaps in the past year. Most of those were not because of failures, but faster wear of some components that could not be done with the engine on the wing. That is of course not sustainable...

The CEO has had its share of catastrophic failures, shedding blades and vibrating the cabin into a panic. Spirit is surprisingly tight lipped with their failures so it's hard to say but the NEO stuff I've heard about has been shutdowns where you have time to have a cup of coffee while complying with the COM.

Took off in an IAE or “CEO” engine a few nights ago...
N1 vib at 3.7
It’s all a gamble.
Any one of these things could come apart.
High speed mechanical things fail.
It’s part of the job.....

Not just at NK. Supposedly the fix for that is available, but it takes time to produce the parts and swap them out. Apparently a lot of the production of new parts is going to new engines for the factory backlog, the engines in service are having to share availability with new production. Also heard it's not a safety thing, more a mx headache.

"We are in the midst of evaluating the options for deliveries beyond 2021 and anticipate having an update on that front by year-end." Ted @ Q2 Earnings call.

Well Ted, it's year-end. Hoping no news is good news.