Summary
We propose to adopt a new airworthiness directive (AD) for SOCATA Models TB 9, TB 10, TB 20, TB 21, and TB 200 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 corrosion of the horizontal stabilizer. We are issuing this proposed AD to require actions to address the unsafe condition on these products.