"after it unexpectedly flipped upside down at 16,000 feet"
what a dork, he shouldn't be teaching anyone how to fly!
I got flipped in an imbedded thunderstorm crossing between El Monte and Seal Beach and it was only a problem to the 2 passangers that were totally spooked by it.
Transitioning that sector is a very confined corridor since it is crossing the landing approach to LAX. When I asked the controler to detour around those things his response was, they are only little ones and you only have 2 more to go!
Thanks a lot AH!
That would have scared the crap out of me! Not enough to close my eyes and spiral 16K feet to certain death.