| Crash location | Unknown |
| Nearest city | Leavenworth, WA
47.596233°N, 120.661477°W |
| Tail number | N9978D |
|---|---|
| Accident date | 29 Jul 1990 |
| Aircraft type | Piper PA-22-150 |
| Additional details: | None |
THE PILOT'S MISJUDGEMENT IN PREFLIGHT PLANNING WHEN DEPARTING TOWARD RISING TERRAIN. CONTRIBUTING FACTORS IN THIS ACCIDENT WERE HIS DECISION TO ATTEMPT A CLIMB-OUT WITH FULL FLAPS EXTENDED, AND THE MINIMAL PERFORMANCE DATA AVAILABLE TO HIM UPON WHICH HE COULD BASE HIS DECISION.