
| Date: | October 06, 1955 |
| Location: | Near Centennial, Wyoming |
| Aircraft: | Douglas DC-4 |
| Reg: | N30062 |
| Airline: | United Air Lines |
| Flight No: | 409 |
| Fatalities: | 66: 66 |
| The DC-4 crashed into cloud covered Medicine Bow Peak while en route. The pilot deviated from course for reasons unknown. Possible incapacitation of crew by carbon monoxide emanating from a faulty cabin heater, though never proven. |