Transport Canada CF-2024-12

Requires replacing the nosewheel steering potentiometer universal coupling setscrews, inspecting the installation torque, and applying a secondary locking feature. AD also requires updating the time limits/maintenance checks. Prompted by an in-service report where, upon landing with touchdown on the runway centerline, the airplane veered to the left below 80 knots. The crew kept the airplane on the runway with rudder and differential braking. A subsequent investigation determined that the nosewheel steering potentiometer universal coupling setscrews were loose, causing an uncommanded steering input. If not corrected, this condition could lead to a runway excursion.