Probable cause
Loss of engine power after takeoff for reasons that could not be determined because postaccident examination did not reveal any evidence of an anomaly that would have precluded normal operation.
NTSB analysis
The private pilot reported that a preflight inspection and engine run-up revealed no anomalies; however, during the initial climb after takeoff, the engine was not developing full power. The pilot initiated a shallow left turn back to the runway, but the airplane was not able to maintain altitude or airspeed and subsequently impacted a house.
A postaccident examination of the airframe and engine did not reveal any mechanical anomalies that would have precluded normal operation, and the reason for the loss of engine power could not be determined.
Text from the NTSB. Open the NTSB docket for WPR15LA087 for the full record.
Event
- Date
- Jan 20, 2015
- Type
- Accident
- Place
- Helena, Montana
- Nearest airport
- Helena Rgnl (HLN)
- Highest injury
- Minor
- Minor injuries
- 1
- Weather
- Visual (VMC)
- Light
- Day
Piper PA 28-140
- N-number
- N4666R
- Category
- Airplane
- Year built
- 1966
- Damage
- Substantial
- 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.