My P3P Drone is barely a month old, has about 8 hours of flight time and has never been crashed. I have been reading a lot of posts about hairline cracks so I decided to look at mine today, sure enough there was a small hairline crack about a quarter inch long in the underside of one prop arm where the motor bolts on. So I guess I have to contact DJI. This is very annoying the product is amazing, it works to the letter of what I would of hoped for, you would have thought they would have used better materials, it's not like this is the first kick at the can. This problem seems to go back a few generations of their Drones