The NTSB determined the probable cause(s) of this accident to include: "The pilot's failure to maintain adequate airspeed while turning to join the final approach leg
of the airport traffic pattern with full airplane-nose-up trim, which resulted in the airplane exceeding its critical angle of attack and experiencing an aerodynamic stall.
During the final approach leg
I was focusing on the visual cues out the front windscreen and the side window--not the instrument panel or the instructor's actions.
A GPS plot was generated from the RDM data and revealed the airplane turned on to the final approach leg
at 2010:15, at a GPS altitude of 1211 feet.
Subsequently, as the Cirrus was entering the final approach leg
at about 1900 feet, the Gulfstream overflew the Cirrus at about 2100 feet.
When the airplane began its turn on to the final approach leg
from the left base leg of the traffic pattern, the engine was heard to stop.