Probable cause
The pilot’s failure to maintain proper engine rpm, which resulted in a high rate of descent and ground impact.
NTSB analysis
The pilot reported that the engine was at 3,200 rpm (full power) during takeoff. He completed the last aerial application pass, initiated a climb, and made a 180-degree turn. During the course reversal, the engine power was about 2,000 rpm. He was increasing the power during the rollout when the helicopter descended rapidly and impacted the field. A postaccident examination of the airframe and engine revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation.
Text from the NTSB. Open the NTSB docket for CEN13LA395 for the full record.
Event
- Date
- Jul 6, 2013
- Type
- Accident
- Place
- Plover, Wisconsin
- Highest injury
- Minor
- Minor injuries
- 1
- Weather
- Visual (VMC)
- Light
- Day
Bell 47G-3B-1
- N-number
- N7924S
- Category
- Helicopter
- Damage
- Substantial
- Operating rule
- Part 137 (agricultural)
- Purpose of flight
- Aerial application
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.