What happened
During an approach to Monterrey-Del Norte Airport, the flight crew was instructed to descend to an altitude of 5,000 feet. At the time of the incident, the area was experiencing adverse weather conditions, characterized by fog and rainfall that significantly reduced visibility.
While the descent was underway, the aircraft continued to descend below the assigned 5,000-foot altitude. This resulted in the aircraft striking the slope of Mt Cerro de Las Mitras, situated approximately 22 km from the destination airport. The impact caused the total destruction of the plane. There were three fatalities among the occupants of the flight.
Findings
Preliminary details indicate that the unauthorized descent below the assigned altitude was the primary factor leading to the collision with the terrain.