What happened
In the afternoon, a crew departed Lyon-Bron Airport for a local training mission. During the final approach phase, the pilot failed to recognize that the aircraft was flying at an altitude too low for safe clearance. The airframe subsequently collided with an electrical pylon and impacted the wall of a nearby farm structure. The impact resulted in the total destruction of the aircraft. All four occupants on board sustained injuries during the crash. While initial survivors were treated, the pilot and one observer succumbed to their wounds the following day.
Findings
The official investigation attributed the accident to pilot error. Specifically, the failure to maintain adequate altitude during the approach phase was identified as the primary contributing factor leading to the collision with ground infrastructure.