| Crash location | 34.316670°N, 117.850000°W
Reported location is a long distance from the NTSB's reported nearest city. This often means that the location has a typo, or is incorrect. |
| Nearest city | Azusa, CA
34.133619°N, 117.907563°W 13.1 miles away |
| Tail number | N39YV |
|---|---|
| Accident date | 10 May 1989 |
| Aircraft type | BE-20(AF) Beech 200(NTSB) |
| Additional details: | Yellow/Green; Air |
IMPROPER IN-FLIGHT PLANNING/DECISION BY THE PILOT, WHICH RESULTED IN HAS INADVERTENT FLIGHT INTO INSTRUMENT METEOROLOGICAL CONDITIONS (IMC) AND SUBSEQUENT COLLISION WITH MOUNTAINOUS TERRAIN. THE WEATHER AND TERRAIN CONDITIONS WERE CONSIDERED TO BE RELATED FACTORS.