Probable cause
A partial loss of engine power for undetermined reasons.
NTSB analysis
According to the instructor, the student pilot was making a practice autorotation to be followed by a powered recovery in preparation for his taking the private pilot practical test. When power was added, only 2500 rpm (instead of 3050 rpm) were attained. The helicopter slid approximately 2 feet on a rain-soaked field. The skid toes dug into the soft ground, stopping forward movement and causing the fuselage to shift forward. The main rotor blades contacted and severed the tail rotor driveshaft. In addition the tail rotor gearbox, tailboom, and a main rotor blade were damaged. Postaccident examination of the engine and powertrain revealed no anomalies that would have prevented the engine from producing full power.
Text from the NTSB. Open the NTSB docket for CEN09CA257 for the full record.
Event
- Date
- Apr 20, 2009
- Type
- Accident
- Place
- Dacono, Colorado
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Enstrom 280FX
- N-number
- N409LH
- Category
- Helicopter
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Instructional
Other records under this N-number
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.