Accident Overview
On March 26, 2026, at approximately 1539 Hawaii standard time, a Hughes 369D helicopter, registration N715KV, was substantially damaged when it crashed into the water near Haena, Hawaii. The pilot and one passenger sustained serious injuries, while three passengers were fatally injured. The helicopter was operated as a Title 14 Code of Federal Regulations Part 135 revenue sightseeing flight.
Flight Details
The helicopter departed Lihue Airport (LIH), Lihue, Hawaii, at about 1512 for a local sightseeing tour. This flight was scheduled as the sixth and final flight of the day. The flight proceeded uneventfully until it reached the northern shore of the island, near Haena, approximately 20 miles northeast of LIH.
Pilot's Account
According to the pilot, upon reaching Kalalau beach, he executed a left turn away from the shoreline as part of the normal flight profile. During the turn, he experienced a high-frequency vibration throughout the helicopter that came in waves, each wave stronger than the previous. Subsequently, the helicopter began an uncommanded right yaw that could not be corrected with input from the left anti-torque pedal. The helicopter quickly started a clockwise rotation, completing about two rotations. The pilot then entered an autorotation, rolling the throttle to idle and attempting to increase airspeed for better directional control. The pilot noted that the spinning stopped during the autorotation and he made a mayday radio call. Unable to reach the beach, the helicopter impacted the water and rolled onto its right side about 75 yards from the shoreline, shortly thereafter becoming partially submerged.
Witness and Passenger Accounts
A witness flying near the accident site observed the helicopter impact the water. The helicopter came to rest upright, tilted slightly to the right, facing east. Another witness reported that the helicopter appeared intact before impacting the water and then broke up. The surviving passenger on the flight stated that she heard a change in the sound and the helicopter slowed down. She then observed the helicopter rotating toward the water, after which it nosedived into the water.
Postaccident Examination
Postaccident examination revealed that the helicopter’s fuselage and main rotor blades sustained substantial damage. The helicopter was recovered to a secure facility and retained for further examination.