| Crash location | Unknown |
| Nearest city | San Luis Obispo, CA
35.282752°N, 120.659616°W |
| Tail number | N79DD |
|---|---|
| Accident date | 24 Sep 1990 |
| Aircraft type | Cessna 500 |
| Additional details: | None |
THE PILOT'S IMPROPER IFR (INSTRUMENT) PROCEDURE, AND HIS FAILURE TO MAINTAIN THE MINIMUM DESCENT ALTITUDE (MDA) FOR THE APPROACH. THE ADVERSE WEATHER WAS A RELATED FACTOR.