What happened
The aircraft was climbing toward its cruise altitude when the turbocharger failed. The pilot responded by selecting high boost and full rich mixture settings. This action resulted in a total loss of engine power. At the time, instrument meteorological conditions (IMC) were present. Air traffic control initially vectored the pilot toward a distant airport. Subsequently, the pilot was redirected to a closer airstrip. The pilot executed a forced landing on a residential street. During the landing sequence, the airplane collided with wires, trees, and a house. The aircraft then burned.
The investigation
A post-accident examination of the turbocharger was conducted. The inspection disclosed that the component had been improperly reassembled by the overhaul facility responsible for its maintenance.
Findings
The failure of the turbocharger during climb was a critical factor. The improper reassembly by the overhaul facility contributed to this mechanical failure. The pilot's selection of high boost and full rich mixture settings exacerbated the situation, leading to total loss of power. The presence of IMC complicated the pilot's ability to navigate to a suitable landing site. The final outcome involved a collision with residential structures and vegetation.
Safety message
Proper reassembly of critical engine components by overhaul facilities is essential for flight safety. Pilots should be aware that mechanical failures can occur due to maintenance errors, requiring immediate and appropriate emergency procedures.