Probable cause
The improper installation of the wastegate controller O-ring, which resulted in a partial loss of engine power.
NTSB analysis
Shortly after leveling off at a cruise altitude of 8,500 feet mean sea level, the pilot noted that the engine rpm increased to above its red line limit (2,700 rpm). The pilot was able to reduce power to 2,500 rpm but was unable to restore thrust and maintain altitude, so he made a forced landing in a nearby wheat field. During postaccident examination, the engine turbocharger controller was found covered with oil. Examination of an elbow fitting on the turbocharger wastegate control revealed that an O-ring was improperly installed and flattened, which allowed oil to seep out. When the O-ring was reseated and the elbow fitting torqued, no seepage was observed.
Text from the NTSB. Open the NTSB docket for CEN12LA558 for the full record.
Event
- Date
- Aug 17, 2012
- Type
- Accident
- Place
- Ruleton, Kansas
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Day
Beech A36
- N-number
- N262EA
- Category
- Airplane
- Damage
- Substantial
- Operating rule
- Part 91 (general aviation)
- Purpose of flight
- Executive or corporate
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.