Airworthiness Directives; Saab AB, Support and Services (Formerly Known as Saab AB, Saab Aeronautics) Airplanes

FAA / Federal Register · 2022-09420

The FAA proposes to adopt a new airworthiness directive (AD) for certain Saab AB, Support and Services Model 340A (SAAB/SF340A) and SAAB 340B airplanes. This proposed AD was prompted by a report that there is no evidence that post-machining stress relief or de- embrittlement post-cadmium plating treatments were performed on certain torque arm center pins. This proposed AD would require replacing each affected torque arm center pin on the main landing gear (MLG), as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference. This proposed AD would also prohibit the installation of affected parts. The FAA is proposing this AD to address the unsafe condition on these products.