I sent back my P3P with a cracked lower shell to DJI Repair in Carson CA. I had a RMA number and they covered UPS shipping and all repairs, it was 7 months old and still under warranty.. I believe they sent me a new P3P because all the serial #'s were different and looked brand new. Two days after receiving it, I charged a battery and wanted to fly. I did all pre flight checks and always calibrate at my take off spot. After 63 seconds of flight, she was uncontrollable and flew for about another 20 seconds without me able to regain control until it crashed into a tree at an altitude of 37ft, 900ft from takeoff. I've flown at this location dozens of times with no interference, it's a wide open park with a lake. I called DJI and explained my issue. They opened a ticket and asked me to sync my flight records so they can evaluate. I was able to retrieve it the next day and have since returned it to DJI for repair/replacement. They have not notified me yet if it was my fault (it was not) or a faulty unit. My original P3P that I returned with the crack had 28 hrs of flying time with 1,673,495 feet traveled. Never had an issue and loved to fly it. I regret sending it back!