You should consider working for an aviation insurance company in claims. I'm in this industry and I do perform investigations for the company. It's not a requirement to be a commercial pilot, but most in the field are. I have my FAA commercial ratings as well as my mechanic certificates and that knowledge helps a lot when trying to figure out why an aircraft crashed the way it did. Now, it's not all crashes, mostly it's trying to get planes fixed when they get damaged which means working with repair facilities to adjust losses and knowing who's who and what's what in the biz. Check out independent contractors like Charles Taylor and Air Claims as well as local aviation insurance companies that have in house claims departments.