Sequence of Events
The pilot of a Part 135 cargo flight reported passing the outer marker and lowering the landing gear, receiving three green indications. Landing on the runway at the fixed distance markers, the pilot held the nose wheel off the ground. The aircraft felt as if the right main gear was locked and the brakes were being applied. After releasing rudder pressure, the aircraft drifted to the right. The pilot lowered the nose wheel to regain steering control, but it had no effect. The aircraft continued drifting until the left propeller struck the ground and the nose landing gear collapsed.
Examination
Post-accident examination revealed that the left main landing gear had collapsed upon landing. The left main landing gear torque link assembly (scissors assembly), part number 5141005-7, was found to have failed.
Maintenance History
Approximately 22.1 hours before the accident, maintenance had been performed on the main and nose landing gear scissors assemblies. This maintenance involved the removal and replacement of worn bushings.