Airplane Crash - Near Winona, Minnesota 08/29/1948
Details of airplane crash/ shootdown - Near Winona, Minnesota
| Date | 08/29/1948 |
| Time | 17:05 |
| Location | Near Winona, Minnesota |
| Operator | Northwest Orient Airlines |
| Flight # | 421 |
| Route | Chicago - Minneapolis |
| Type | Martin 202 |
| Registration | NC93044 |
| Cn/In | 9165 |
| Aboard | 37 |
| Fatalities | 37 |
| Ground | 0 |
| Summary | Crashed following the separation of the left wing after the aircraft entered a thunderstorm. Loss of the outer panel of the left wing which separated as a result of a fatigue crack which was induced by a faulty design of a wing flange, aggravated by severe turbulence of the thunderstorm. |
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