Incident Overview
During the initial climb after takeoff, the aircraft encountered an uncommanded right roll and yaw. The flight crew successfully arrested the unwanted roll and yaw movements and subsequently returned to the departure airport without further issues.
Post-Flight Inspection
Following the landing, a detailed inspection of the aircraft's flight control system revealed that the right-hand spoiler control arm had become entangled in the right aileron cable bus guard. This entanglement was the direct cause of the control anomalies experienced during the climb.
Root Cause Determination
Further examination of the aileron cable bus guard, combined with a review of the engineering drawings for the component, disclosed that the bus guard had been installed incorrectly. Specifically, the guard was rotated 180 degrees from its correct orientation, leading to the interference with the spoiler control arm.
Corrective Action
The incorrectly installed bus guard was rectified to the proper position as per the engineering specifications. No further incidents attributable to this installation error were reported.