Helicopters don't start on multiplayer servers when in survival mode Coal and everything was done right!

They work for me (though I'm using the electric engine). You need to give details, and version numbers for this to be a useful bug report.

and everything was done right!

Perhaps mention the exact steps you did to create the helicopter. 99% of the time, people who say this are wrong...

Hello, Though poorly worded I have the same issue with Coal engines. No matter how you try to add fuel the plane or helicopter do not fly despite showing plane is burning fuel. I have had this issue on both 1.19 and 1.19.2 with whatever the forge recommended version was for both. I am running other mods but with two reports I don't think it is a conflict.

Okay so my theory is that you don't understand that you have to use space to go up. Check keybindings.

Wow what a genius my problem is solved! On a serious note, confirmed key bindings and everything works normally with the electric engines.

FYI at least my version of the issue was resolved with the latest update. Cheers