I was a an Air Force trainer instructor in the T-37, which was replaced by this plane. At the Pentagon, I worked on procuring the T6 as the replacement for the T-37. I’ve flown in this plane twice, it has an ejection seat. Extremely stable, designed to safely spin upright and inverted; spinning is part of the curriculum.
I don’t follow this plane closely, but the only known double death I know in training was in the T-37, and that one also had two women. The cause was lack of commitment to a decision the instructor made.
“training” = “basis training” = first plane in pilot training.