Incident Overview
During a training flight, the right main gear "in transit" light remained illuminated following gear retraction. Various attempted remedial actions did not resolve the indication. The aircraft subsequently landed on Runway 21 with the nose and left main gear in the down position, while the right main gear remained in transit. Directional control was maintained nearly throughout the landing roll.
Maintenance Background
Prior to the flight, company maintenance personnel had inspected the landing gear in compliance with a telegraphic message from the manufacturer. The inspection was initiated by one maintenance shift and completed by another. Insufficient information was passed between the shifts to ensure that the gear door was properly re-rigged.
Gear Malfunction
During gear extension, the gear door jammed, preventing complete extension of the gear. This resulted in the right main gear remaining in the in-transit position for the landing.
Probable Cause
The stated cause was insufficient information passed between maintenance shifts, leading to improper re-rigging of the gear door, which jammed during extension and prevented full gear deployment.