| Crash location | Unknown |
| Nearest city | Mansfield, WA
47.811532°N, 119.636714°W |
| Tail number | N5321U |
|---|---|
| Accident date | 04 Jun 1989 |
| Aircraft type | Cushing 4 |
| Additional details: | None |
FAILURE OF THE LEFT WING MAIN SPAR DUE TO OVERLOAD FOR UNDETERMINED REASONS.