Accident Description
During climb to cruise, while passing 2,000 feet mean sea level, the engine lost total power. The airplane subsequently nosed onto its back during the forced landing in marshy tundra.
Postaccident Inspection
Examination after the accident revealed wear between the throttle arm and the connecting hardware bushing. The throttle control lever had disconnected from the throttle arm.
Maintenance History
Service Bulletin SEB95-15R1, titled "Throttle Lever Inspection," required a visual inspection for wear between the arm and bushing every 50 hours or 12 months. Company mechanics had complied with this bulletin 56 hours, 163 hours, and 268 hours prior to the accident. The engine had been newly overhauled and installed 334 hours before the accident.