I worked for Avantair. I personally saw a lot of falsification on maintenance (to the point that the FAA threatened to yank their certificate). I saw people fired over allegations of trying to bring a union on the property. Abuse of duty and rest times, personal abuse and threats, and far too much politicking for a little turboprop operator.
I never did a demo flight that didn't sell a share, but despite promises from Steve Santo himself about commissions on the sales, I never saw a dime. I picked up airplanes from maintenance that had up to 16 major squawks on them, and a lot of pencil whipping done. I saw it regularly.
Avantair was one of the most screwed-up, mismanaged places for whom I've ever worked, and given some of the places I've flown, that's really saying something. The Piaggio was a fun airplane to fly, and I worked with a lot of great crew, but the schedulers and management left a lot to be desired.