| Crash location | Unknown |
| Nearest city | Moraga, CA
37.834926°N, 122.129687°W |
| Tail number | N8475A |
|---|---|
| Accident date | 03 Nov 1987 |
| Aircraft type | Robinson R22A |
| Additional details: | None |
A DIVERGENCE OF THE MAIN ROTOR FROM ITS NORMAL PLANE OF ROTATION FOR AN UNDETERMINED REASON, WHICH RESULTED IN ROTOR CONTACT WITH THE COCKPIT AREA.