Probable cause
The total loss of engine power during cruise flight due to fouled spark plugs, which resulted from a stuck mixture control.
NTSB analysis
The pilot reported that the airplane was in level cruise flight when the engine began to run rough and lose power, followed by a complete loss of engine power. He made a forced landing on a mountain ridge. During the forced landing, the nose wheel encountered rough terrain and collapsed rearward, which resulted in substantial damage to the fuselage. Postaccident examination revealed that the engine’s mixture control malfunctioned, which resulted in fouled spark plugs.
Text from the NTSB. Open the NTSB docket for ANC12CA059 for the full record.
Event
- Date
- Jun 20, 2012
- Type
- Accident
- Place
- Two Rivers, Alaska
- Highest injury
- None
- Weather
- Visual (VMC)
- Light
- Dusk
Amateur-built BLADE 582
- N-number
- N907AD
- Category
- Weight-shift
- 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.