Synopsis
On 29 June 2023, a Robinson R44 II helicopter, registration YS-1505-P, operated by HELICA, a deep-sea fishing company, was conducting a tuna search mission near a tuna boat. The flight began normally after routine checks. About five miles from the boat, the pilot felt vibrations in his feet that intensified throughout his body. He then heard a bang, followed by rotor RPM fluctuations, engine RPM drop, and illumination of low oil pressure and fuel pump warning lights.
Flight Sequence
As the situation worsened, the pilot attempted to maintain control and prepared for an emergency landing. The vibrations continued, and engine power did not respond to corrections. The companion began recording the emergency with a mobile phone, capturing the final moments. At 800 feet, the pilot initiated a controlled descent. At 200 feet, a loud noise indicated a major failure. At 100 feet, the engine lost all power, causing a left yaw. Despite pedal input, the helicopter entered a rapid descent and struck the water violently, similar to hitting concrete.
Injuries and Damage
The pilot and companion sustained contusions and minor cuts. Both were rescued and treated, recovering satisfactorily. No fatalities or serious injuries occurred. The aircraft suffered significant damage: the main rotor stopped on impact, the tail rotor broke, the floats were damaged, and the windshield shattered. The impact force opened the float support structure.
Emergency Landing Attempt
Intended as an emergency water landing, the short altitude and descent speed prevented effective autorotation to soften the landing. The helicopter sustained substantial damage upon water impact.
Investigation
The accident was investigated by the Civil Aviation Authority (AAC) of El Salvador. The technical report detailed a sequence of mechanical failures during the flight, including unusual vibrations and total power loss. No probable cause was explicitly stated in the provided excerpts.