Well I had a small crash tonight. My little boy decided to run over and look at the heli after he has been warned over and over to say away from it when I am flying. I ended up slaming it into the ground to make sure he didnt get in the blades. So far I have found a stripped elevator servo and it bent the tail boom. I replaced the gears in the servo. A set of gears is only 3 bucks or something like that so thats much cheaper than a new servo and pretty easy to do. Next up is replacing the tail boom its a bigger job but shouldnt take to long. After thats done I have to check everything out and make sure I didnt break anything else.
If you went straight down and didn't hit any blades, you should be ok. However, be very careful next time you spool up. The feathering shaft can be bent without being visible and it puts a wicked vibration in the head (I know from experience). The tail boom isn't hard to change out, but you will need a long rod of some sort to help thread the belt down it. If you don't already have a pair of digital calipers, I suggest you go get a pair now. It greatly simplifies setting the tail up after replacing the boom. You'll strip servo gears on just about every crash. So far, it has always been the same gear too.
I'm lucky enough that my daughter is old enough not to do that. The first time I spun the blades up to half throttle, she backed away pretty quickly. The dog on the other hand... He ended up with a bloody spot on his nose when he decided that he needed to go sniff the bird right after I landed. He doesn't get close anymore. Luckily it didn't really do any more damage than a run in with a neighborhood cat would. He just walked around licking his nose for a couple hours.
On a related note, I got to put two battery packs worth of airtime on mine B400 this morning before I headed into work. There was a very light breeze and it was still cool. Nice time of the day to fly. I timed a battery pack and I get almost exactly 10 minutes at hover and very basic forward/reverse flight. I find I have no problem with transition into forward flight or out of backward flight, however the transition out of forward flight into a hover seems to give me the most problem. I think it is because I am scared of kicking the nose up hard enough to halt forward momentum without popping up 20 feet. It's something I can practice in the sim though.
I still have to work out some issues with the tail. I think I'm going to try upgrading to the DSP75 servo for the tail and see if that helps. It seems the gyro will occasionally let loose of the tail for a split second. I'm trying the server first since it is a much cheaper upgrade than the gyro.