This is likely a similar question as was posed a few days ago, but here goes. We recently purchased a Phantom 2 Vision + and have just taken our first flights. Because we are total newbies we do have the prop guards and strings attached. We went out flying today and had several instances where the quad more or less fell out of the sky. Certainly it wasn't like a stone falling, but it came down hard and completely out of our control. Once it happened when in a hover and once it happened while trying to bee-line it back to "base". I first thought that it might be a dead air issue when it was hovering, but when it happened while gong full forward that seemed unlikely. The battery phantom battery was at about 45% when it first happened and then progressively lower as it continued happening. Some answered "VRS" to the other post...what does that mean? Thanks in advance for any ideas. BTW flying conditions were warm (80s), inconsistent breeze, fairly humid (at least for SW CO).