auto cancels?

[Crawfish]

do his aerials auto cancel? if so, how/what timing?

 

[EternalFlame]

I don't quite know the frame data, but from general experience, none of his aerials auto cancel. Even the fastest ones (Nair and Uair), have a small window of commitment after landing on the ground with them, which make them hard to combo with compared to other characters.

I may be misinterpretting what you mean by auto cancel, but I'm assuming something along the lines of Link's Fair recovery.