No, it's not coming from the motor. It's coming from the little speaker attached to the esc that makes the beeps that let you know that you have power and that its armed and ready. But again, about a minute after the three tones as normal, i get a long, never ending tone. It's an alarm of some sort, I just don't know what's wrong or what to look for. I know the problem is unique to this plane, because my other foams escs don't behave this way