| Crash location | Unknown |
| Nearest city | Alderwood Manor, WA
47.822041°N, 122.282075°W |
| Tail number | N8020E |
|---|---|
| Accident date | 10 Jun 1989 |
| Aircraft type | Whittaker Bushby Mustang 1 |
| Additional details: | None |
PILOT'S FAILURE TO MAINTAIN PROPER AIRSPEED. CONTRIBUTING FACTORS WERE THE PILOT'S POOR JUDGEMENT IN FLYING A TRAFFIC PATTERN AT TREE-TOP LEVEL AND A TAILWIND CONDITION DURING THE STEEP TURN TO FINAL.