My server is having this problem where the server crashes when a player flies over an ocean with a plane/helicopter. Here's the crashlog:
crash-2021-01-24_23.54.21-server.txt

This is either a vanilla bug or some mod modifies dolphin behaviors. Nothing related to simple planes.

Thank you! I'm guessing it is an incompatibility with Lithium. I just read up about that mod and it appears to mess around with Tick Times. I'll go ahead and remove that