| Crash location | Unknown |
| Nearest city | Skykomish, WA
47.709275°N, 121.360101°W |
| Tail number | N21NW |
|---|---|
| Accident date | 02 Sep 1989 |
| Aircraft type | Cessna TU206C |
| Additional details: | None |
THE PILOT'S DECISION TO CONTINUE THE FLIGHT INTO IMC. THE PILOT DID NOT ADEQUATELY PLAN AND PREPARE FOR THE FLIGHT AND WAS UNABLE TO MAINTAIN A PROPER ALTITUDE ABOVE THE TERRAIN FOR VMC. FOG WAS A RELATED FACTOR.