Big up to the
crew for barrel rolling an aircraft that is not approved for such a manoeuvre and it is only limited to 60 degrees max bank. Either crew not aware of aircraft limitations or just don't care for them.
I hope I never have the misfortune of flying that aircraft. It will be the crew that are flying that heap in a few thousand hours time through bad weather that will pay the price.
I have heard that a 1900 that has been barrel rolled starts to show when the fairing at the base of the tail starts to pull away from the tail. The aircraft generaly has a very light fuselage and I doubt it can withstand that sort of abuse for long.
I don't think that is a video to be proud of!