On January 24, 1998, a Hughes 369D (registration N521ZZ) was involved in an aviation accident near Pacific Ocean, PO. Investigators recorded the probable cause as: The pilot erred in controlling the helicopter. This summary draws on records from the U.S. National Transportation Safety Board (NTSB) historical archive.
A helicopter conducting an aerial observation to herd fish crashed into the water after turning downwind and descending into a tailwind. The pilot admitted control error before dying.
Accident Overview
During a fish herding operation, a helicopter took off from a ship with a pilot and observer aboard. The pilot climbed to approximately 400 feet and spotted fish. He then executed a downwind turn and initiated a descent into a prevailing 15-knot tailwind. Neither the turn nor the descent was arrested. The helicopter's heading changed by 180 degrees, and the descent continued until the helicopter struck the water. The aircraft sank and was not recovered.
Pilot Statement
Before his death, the pilot reported that no engine problems had been experienced. He indicated that he had erred in controlling the helicopter.