Cessna 150 - F N8236F accident near Santa Clara, Utah

Probable cause

The flight instructor’s failure to arrest the airplane’s descent and maintain clearance from mountainous terrain while maneuvering at a low altitude.

NTSB analysis

A witness reported that he observed the airplane at an altitude of between 800 to 1,000 ft above ground level about 2 miles from his location. About the same time, he also heard the airplane's engine sputter, and he then observed the airplane in a vertical, nose-down attitude for 3 to 4 seconds before it went out of sight behind a hill. The wreckage was found about 2 hours later in remote mountainous, rocky terrain. An on-site examination of the airframe and engine revealed that the airplane impacted the terrain upright in a flat orientation on a 27-degree downslope. Based on observed impact signatures, the airplane's forward momentum was negligible just before it impacted terrain. All of the components necessary for flight were accounted for at the accident site. Additionally, examinations of the airframe and engine revealed no anomalies that would have precluded normal operation. Based on the witness's observations and the physical evidence observed at the accident site, it is likely that the airplane was in a steep descent at a low altitude and that the flight instructor failed to pull the airplane up and out of the nose-down attitude at a sufficient altitude to preclude impact with terrain.

Text from the NTSB. Open the NTSB docket for WPR14FA183 for the full record.