Accident Sequence
Shortly after departing from Rock Springs Airport, the aircraft's engine lost power. The pilot initiated a course reversal in an attempt to return to the airport. However, unable to reach the runway, the pilot executed a forced landing. During the landing roll on rough terrain, the nose landing gear collapsed, and the aircraft subsequently flipped over.
Post-Crash Examination
Following the accident, an examination of the engine revealed that the nut and bolt securing the throttle control cable to the carburetor control arm were missing. This had caused the two components to become disconnected.
Maintenance Background
An annual inspection had been performed two days prior to the accident. During that inspection, the carburetor had been removed and reinstalled. The mechanic reported that while he was attaching the cable to the arm, he was called away to the telephone. No further details were provided.