Alabaster-Shelby County

Prior to the post-maintenance inspection flight the pilot/owner, who is a certificated a&p mechanic, had been calibrating the fuel flow on the right engine fuel injector pump. An external line had been connected to the fuel flow transmitter fitting of the fuel injector. Prior to the test flight the external line was removed and the fuel flow replaced. About 10 min after takeoff the pilot observed flames from 25 to 15 psi. The right engine was shut down and the prop feathered. After landing the pilot was unable to taxi the aircraft and the aircraft was abandoned.