The NTSB has determined that two cousins age 23 and 34 were killed in the crash of a rented Cirrus SR-22T on Nov. 13, 2011, near Boynton Beach, Fla., while attempting aerobatics. There were no other occupants aboard the aircraft, which impacted in a marsh. A pilot who witnessed the crash told the NTSB that the aircraft pitched from level flight to a 30-degree nose-up attitude before rolling inverted, reversing the roll and ultimately impacting the ground in an (estimated) 80-degree nose-down condition. Information contained in the aircraft's data recorder largely coincided with that account. It also showed that roll wasn't the aircraft's first.
This is a companion discussion topic for the original entry at https://www.avweb.com/news/crashed-cirrus-data-recorder-tells-aerobatic-tale