Primary finding
Probable cause
The pilot’s improper recovery from a bounced landing on a slope, which resulted in dynamic rollover.
Investigator assessment
Analysis narrative
The pilot explained that the accident occurred at the completion of a local flight that departed from a private residence. While landing from a hover to a “slight slope,” the pilot said he lowered the collective “too rapidly,” the helicopter “landed roughly” and that he raised the collective control to recover the landing. “At that point, I entered a dynamic rollover to the left in which I was unable to recover.” The helicopter came to rest on its side with substantial damage to the cabin and the tailboom. The pilot reported there were no mechanical deficiencies with the helicopter that precluded normal operation.