Incident Overview
A pilot experienced a landing gear malfunction while attempting to land. The main landing gear would not extend, and the landing gear down-and-locked light did not illuminate. The hydraulic motor continued running, and the hydraulic fluid reservoir was adequately filled. After performing all recommended emergency procedures for landing gear malfunctions without success, the pilot executed a landing with the nose landing gear extended and the main landing gear only partially extended.
Landing and Runway Excursion
During the landing, the airplane tilted and drifted to the left of the runway, ultimately impacting a sign. The aircraft came to rest with the main landing gear retracted.
Post-Accident Examination
A post-accident examination of the landing gear system revealed that the right main landing gear door actuator had failed. The retaining clip on the actuator was installed improperly. The failed actuator had been worked on 10.7 hours prior to the accident.