Will this play nice alongside Aircraft Realism?
https://mods.factorio.com/mod/AircraftRealism

Any plans to cover the Helicopter, Lex's Aircraft, or King Jo's planes?
https://mods.factorio.com/mod/HelicopterRevival
https://mods.factorio.com/mod/lex-aircraft
https://mods.factorio.com/mod/kj_king_jos_planes

As for Aircraft Realism:
I haven't tried it. Aircraft Tweaks just does some number rebalancing, the only potential issue could be if my speed and acceleration rebalances cause issues with some of Aircraft Realisms mechanics. I'd suggest trying it. If something breaks, feel free to let me know. Maybe I will investigate it further.

As for the other three Aircraft mods:
Currently no, but I believe that the Modpack I'm playing right now does actually have Lex' aircaft. Maybe I will include them in my tweaks too and in that case I might check out the other two mods as well.

It seems that Aircraft Realism crashes when combined with this mod, with the following error:

The mod Aircraft Realism (2.0.3) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event AircraftRealism::on_tick (ID 0)
__AircraftRealism__/logic/planeController.lua:61: Old plane and new plane inventories are different sizes. Check plane prototypes
stack traceback:
    [C]: in function 'assert'
    __AircraftRealism__/logic/planeController.lua:61: in function 'copyInventory'
    __AircraftRealism__/logic/planeController.lua:230: in function 'transitionPlane'
    __AircraftRealism__/logic/planeController.lua:470: in function 'checkTransitionTakeoff'
    __AircraftRealism__/logic/planeController.lua:482: in function 'updateGroundedPlane'
    __AircraftRealism__/logic/planeController.lua:547: in function 'handler'
    __AircraftRealism__/control.lua:48: in function <__AircraftRealism__/control.lua:40>

This appears to be the same incompatibility as mentioned here: https://mods.factorio.com/mod/AircraftRealism/discussion/69519ebb1822207f94bd3737
except with this mod instead of AAI.

I might have to write some specific compat for Aircraft Realism then.
For now I would just suggest to treat them as incompatible, but when I get around to adding the AAI compat, i might also try to make ATweaks + ARealism + AAI work in combination.