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Information verified through data from accident investigation authorities
Narrative: On April 6, 2024, about 1350 eastern daylight time, a Robinson R-44, N234ZT, was substantially damaged when it was involved in an accident near Key Biscayne, Florida. The pilot was seriously injured. The helicopter was operated as a Title 14 Code of Federal Regulations Part 91 personal flight.
According to the pilot, he topped off all fuel tanks at Miami Executive Airport (TMB), Miami, Florida, completed a preflight inspection, and was flying with on a visual flight rules (VFR) flight plan with VFR flight following services to North Eleuthera Airport (MYEH), North Eleuthera, Bahamas. About 20 minutes after departure, after leveling off, he felt a millisecond “jerk.” Although there were caution/warning illuminations or aural warnings, and the engine gauges were all “in the green,” he turned back toward land as a precaution. A minute later, he felt another “jerk,” descended to 500 ft above ground level then felt a longer “shake,” at which time he declared an emergency. He began hearing odd engine sounds and noted that he was having to add power although the helicopter was decelerating. While maneuvering the helicopter as close to land as possible, the low rpm horn sounded, the engine lost all power. The pilot began an autorotation, entering the Atlantic Ocean about 1 nm from Key Biscayne at a 30º angle to prevent excessive impact to the lower fuselage.
The helicopter’s windscreen fractured, and the tail rotor separated from the fuselage, when the helicopter impacted the water at about 35 kts. Although the cockpit was filling with water, the auto-inflated lifejacket prevented the pilot from being able to exit the helicopter. Upon removal of the life jacket, he was able to exit the helicopter and swim up to the surface, where he was rescued.
The helicopter was recovered and retained for further examination.