| Crash location | Unknown |
| Nearest city | Santa Rosa, CA
38.440467°N, 122.714431°W |
| Tail number | N1604L |
|---|---|
| Accident date | 29 Dec 1989 |
| Aircraft type | McDonnell Douglas 369E |
| Additional details: | None |
THE PILOT'S IMPROPER PREFLIGHT PLANNING/DECISION WHICH RESULTED IN THE LOSS OF TAIL ROTOR EFFECTIVENESS. CONTRIBUTING TO THE ACCIDENT WAS THE PILOT ALLOWING THE MAXIMUM GROSS WEIGHT OF THE AIRCRAFT TO BE EXCEEDED, AND THE TAILWIND.