On firing up a new P3A I immediately noticed a whining noise that starts a few seconds after gimbal initialization and continues until the battery is turned off. It sounds like a small fan with bad bearings. At first I thought it was the sonar used by VPS but after reading this forum, the consensus is that the sonar just emits a clicking sound and I also hear that. I'm certain it is not coming from the gimbal. There are several posts on this forum discussing this so it is not unique to my bird. But I have not read any definitive answer - just speculation. I have ignored the sound and the bird flies with no problems. Video is solid and steady and control is crisp and precise. So I'm conflicted on whether this is something that should be repaired by warranty or if it is normal. I know the P3P has a fan in the gimbal but the P3A does not. Is there a fan in the main body?