I have the P4A and just recently it started making two clunk sounds when arming. And as it's sitting there idling, it will occasionally make the same clunking sound. Not on a regular interval, just randomly. The motors seems to spin smoothly by hand, no kinks. They're not loose. This is even if I don't have props on it.
Is there any maintenance or checks I can do for that?
Thanks
Andy
Is there any maintenance or checks I can do for that?
Thanks
Andy