Probable cause
A total loss of engine power after takeoff for reasons that could not be determined, because examination of the engine did not reveal any mechanical anomalies that would have precluded normal operation.
NTSB analysis
The commercial pilot/owner, an airframe and powerplant mechanic with inspection authorization privileges, performed an annual inspection on the airplane in order to return it to service after it had been in storage for about 2 years. Ground engine run-up checks revealed no discrepancies, and he decided to perform a test flight. After takeoff, the engine sputtered and lost power, and the pilot returned to the airport for a precautionary landing. The airplane overran the runway, struck a tire, and came to rest inverted.
A postaccident engine run revealed no mechanical discrepancies that would have precluded normal operation. The reason for the loss of engine power was not determined.
Text from the NTSB. Open the NTSB docket for WPR15LA106 for the full record.
Event
- Date
- Feb 18, 2015
- Type
- Accident
- Place
- Alfalfa, Oregon
- Nearest airport
- Goering Ranches (50OR)
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Dusk
Grumman Acft Eng Cor-Schweizer G 164A
- N-number
- N4863
- Category
- Airplane
- Year built
- 1972
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Flight test
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.