TUI 737 -10 orders >? (aka 737 MAX -10)
TUI UK have a lot of the 230 seat 737 -10's on order -
They are now badly delayed by years - they should have been in service in 2021 to begin to replace all of the 757's.
I'm not sure if TUI's current order of 16 aircraft has even been built yet.
No idea if Boeing is going to get the -10 (B3XM) approved or not - if not, then TUI may have to stick with converting the orders back to the 189 seat B738M,
or to go for new orders for the A321N and/or the NXLR.
The -10 has still to obtain the 'grandfather' rights of the 737 family - But it may not - and if not, then Boeing either has to make some revisions to flightdeck alerting systems and get recertification which means existing pilots cannot fly it without new Sim and Line training (which Boeing had guaranteed existing 737 airlines that this would not be needed when the MAX project was launched) or Boeing has to scrap the project.
The 737 MAX -10 Certification has been delayed by slower processes following the FAAs tightening of procedures following the two MAX accidents.
This has delayed any expected certification date to late 2023 which is after the FAAs 27 Dec 2022 deadline after which all newly certified transport aircraft types require a "flight crew alerting system".
Boeing is challenging the need for the 737-10 to have such a system as it would make it significantly different from other 737 models.
Also it remains to be seen that for W23/24 and for S24 the Sunwing/Westjet lease deal will continue again.
This past winter saw TUI UK B738M's go to Canada as well as B738's.
It is notable that there are quite a few new ACMI airlines starting up in various parts of Europe, and Eastern Europe - obviously they see the market there.
IMHO even if the -10 is approved, we will not see them with TUI in 2024.