EASA Regulations for Bombardier Challenger CL-600-1A11

Landing Gear — Uncommanded Steering Due to Nosewheel Steering Potentiometer Universal Coupling Setscrew Failure

The Canadian Airworthiness Directive CF-2024-12R1 addresses uncommanded steering issues caused by failure of the nosewheel steering potentiometer universal coupling setscrews on Bombardier CL-600-1A11, CL-600-2A12, and CL-600-2B16 aircraft models. This directive mandates replacement of the coupling setscrews and updates maintenance procedures to prevent runway excursions due to steering malfunctions. It applies to all serial numbers of the affected Bombardier Challenger aircraft.