Thanks Belique for the FAA link.
FAA Proposes SFAR for MU-2
The FAA is proposing a Special Federal Aviation Regulation (SFAR) applicable to the Mitsubishi MU-2B series airplane that would create new pilot training, experience and operating requirements. Following an increased accident and incident rate in the MU-2B series airplane, the FAA conducted a safety evaluation and found that changes in the training and operating requirements for that airplane are needed. These proposed regulations would mandate additional operating requirements and improve pilot training for the MU-2B series airplane. The proposed rule would also apply to persons who provide pilot training for the MU-2B.
I knew the Western Australian BASI investigator, Don, who paid for increasing the understanding about this plane with his life. RIP.