| 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.