| Crash location | Unknown |
| Nearest city | Coleville, CA
38.566299°N, 119.507112°W |
| Tail number | N53RH |
|---|---|
| Accident date | 31 Aug 1991 |
| Aircraft type | Kaman HH43 B/F |
| Additional details: | None |
THE FAILURE OF THE PILOT TO ADEQUATELY CALCULATE THE HELICOPTER PERFORMANCE. CONTRIBUTING TO THE ACCIDENT WAS A DELAY IN JETTISONING THE EXTERNAL LOAD; THE PILOT'S OVERCONFIDENCE IN HIS ABILITIES; AND EXCEEDING OF THE HELICOPTER'S HOVER ABILITY DURING HIGH DENSITY ALTITUDE CONDITIONS.