[MarchApril]

Used, high quality machinery is always in demand, but I think "used" and "planes" have the ability to subconciously sow some doubts in many people. I personally never heard of any airlines with 100% used planes in their fleets. I definitely would choose an airline with 100% new planes. I guess I'm another victim of marketing.

[ivraatiems]

Do you check whether the plane you're on is new or used, typically? Every major carrier in the US regularly buys and sells their planes. See for example https://www.slashgear.com/1858614/why-united-states-airlines...

It's not the same as buying a new car. The legal requirements for maintenance of commercial aircraft is an order of magnitude more substantial.