| Crash location | Unknown |
| Nearest city | Salt Lake City, UT
40.760779°N, 111.891047°W |
| Tail number | N935F |
|---|---|
| Accident date | 09 Feb 1989 |
| Aircraft type | Mcdonnell Douglas DC-9-32F |
| Additional details: | None |
IMPROPER IN-FLIGHT PLANNING/DECISION BY THE CAPTAIN (PILOT-IN-COMMAND) AND HIS IMPROPER USE OF THE PORTABLE OXYGEN SYSTEM, WHICH RESULTED IN HIS INCAPACITATION DUE TO HYPOXIA. FACTORS RELATED TO THE ACCIDENT WERE: INADEQUATE MAINTENANCE/INSPECTION OF THE AIRCRAFT BY COMPANY MAINTENANCE BY FAILING TO REINSTALL THE AFT PRESSURE BULKHEAD HATCH (INSPECTION DOOR) AND POOR CREW COORDINATION.