I found a helicopter command I want to use in mc 1.9 but it's too long for a command block. Any suggestions? Thanks
One command cannot be to long for a command block. It is possible that two or more commands are needed for what you are trying to accomplish.
Another possibility is you are trying to type it in the chat by just pressing
T for talk. commands in chat are restricted to a certain length and therefor cannot run all commands through the chat if to long.
Try giving yourself a command block by typing
/give <name> minecraft:command_block then copy and paste the command you want to run.
In 1.9 they shortened the length of command lines in command blocks. The reason the command is too long is probably because it was made for 1.8. If you found it through youtube I recommend you go back and watch the video again to see the version of minecraft it was made for. I also recommend that in the future (if this was the problem of course) you should not use 1.8 one command block creations in 1.9. This is due to the fact that command layouts were dramatically changed, for example tellraw, title, and playsound.