Probable cause
The pilot's failure to maintain rotor rpm, resulting in an uncontrolled descent and collision with trees.
NTSB analysis
The helicopter pilot reported that while flying at a low altitude and low airspeed, over tree-covered terrain, he made a steep left turn downwind, and the low rotor rpm horn sounded. He stated that he lowered the collective slightly and rolled on throttle, but the helicopter descended and impacted trees and terrain.
The pilot reported that he completed a damage assessment and flew the helicopter to his home airport without further incident. Substantial damage was sustained to the helicopter left aft fuselage frame assembly.
Text from the NTSB. Open the NTSB docket for GAA15CA232 for the full record.
Event
- Date
- Jul 16, 2015
- Type
- Accident
- Place
- Prairie Lea, Texas
- Highest injury
- Minor
- Minor injuries
- 3
- Weather
- Visual (VMC)
- Light
- Day
Robinson Helicopter Company R44 II
- N-number
- N804DF
- Category
- Helicopter
- Year built
- 2006
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Personal
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.