at around 43:00, the bank angle steepened, followed immediately by an autopilot disengaged alert and the autopilot disengaging. The bank angle was too steep, along with a lack of corrective action after the aircraft’s autopilot disengaged. Not sure why autonav disengaged, or how the bank angle became too steep, maybe a problem with the heading being changed almost 180 degrees? I have no idea on that part. Once the autopilot disengaged and no corrective action was taken however, it was gonna crash. In addition, you went off course while under autopilot, so I’m not sure why the heading was set in that direction.