Incident Overview
A pilot operating a retractable landing gear airplane reported that after departure, the landing gear warning horn continued to sound despite retracting the landing gear. In an attempt to resolve the issue, the pilot performed multiple extensions and retractions of the landing gear. When the warning horn persisted, the pilot decided to proceed with the flight with the landing gear extended.
Landing and Inspection
Upon arrival at the destination airport, the pilot executed an approach that resulted in a bounced landing. After taxiing to parking, the pilot reported the events to the operator. Subsequent inspection revealed substantial damage to the firewall.
Maintenance Findings
Further inspection conducted by the operator's mechanics, accompanied by a Federal Aviation Administration Aviation Safety Inspector, determined that the landing gear warning horn sounded in the retracted position due to an intermittent fault in the throttle position micro-switch.