| Crash location | Unknown |
| Nearest city | Crestone, CO
37.996388°N, 105.699733°W |
| Tail number | N7509Q |
|---|---|
| Accident date | 29 Jun 1989 |
| Aircraft type | Cessna 310Q |
| Additional details: | None |
IMPROPER IN-FLIGHT PLANNING/DECISION BY THE PILOT AND HIS FAILURE TO ATTAIN SUFFICIENT ALTITUDE TO SAFELY CLEAR THE MOUNTAINS. CONTRIBUTING FACTORS WERE: MOUNTAINOUS TERRAIN, BOX CANYON, AND HIGH DENSITY ALTITUDE.