AD FAA-2018-0326

We propose to supersede Airworthiness Directive (AD) 98-16-03 for SOCATA Models TB 9 and TB 10 airplanes. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as fatigue cracking of the wing front attachments on the wing and fuselage sides. We are issuing this proposed AD to require actions to address the unsafe condition on these products.