Background
An aircraft that had not been operated for approximately five years underwent maintenance before a test flight. The pilot, who was also a mechanic, conducted an engine ground run and noted a fuel flow problem that caused the engine to stop. Inspection revealed that the fuel injectors were clogged with corrosion. The injectors were cleaned, and subsequently, the engine was ground run for about 30 minutes at various power settings without any issues.
Incident
Before departing on a test flight, another ground run-up was performed. During takeoff, at an altitude of approximately 200 feet above ground level, the engine lost power. At that time, the fuel gauge was reportedly pegged, indicating a blockage. The pilot executed a landing in a mature corn field, during which the aircraft sustained damage.
Findings
An examination of the engine after the incident found corrosion in the fuel lines.