Probable cause
A loss of main rotor rpm for reasons that could not be determined because an examination of the helicopter’s engine and associated components did not reveal any mechanical malfunctions or failures that would have precluded normal operation.
NTSB analysis
According to the pilot, the helicopter was in cruise flight about 700 feet above ground level when he perceived a loss of rotor rpm and entered autorotation. During the descent, the helicopter turned 180 degrees, struck power lines, and collided with terrain. A postcrash fire consumed a significant portion of the helicopter. A detailed examination of the remaining portions of the helicopter, its engine, and associated components revealed no preimpact mechanical malfunctions or failures that would have precluded normal operation.
Text from the NTSB. Open the NTSB docket for ERA13LA152 for the full record.
Event
- Date
- Mar 2, 2013
- Type
- Accident
- Place
- Ciales, Puerto Rico
- Highest injury
- Minor
- Minor injuries
- 1
- Weather
- Visual (VMC)
- Light
- Day
Robinson Helicopter Company R44 II
- N-number
- N834RC
- Category
- Helicopter
- Damage
- Destroyed
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Personal
From the NTSB aviation accident database: N-registered aircraft, events since 2008, data through Oct 28, 2026. The file is published monthly, so the latest weeks are incomplete and recent records can change. The official source is the NTSB aviation investigation search. CheckAero is independent and not affiliated with the NTSB.