Summary
We propose to adopt a new airworthiness directive (AD) for M7 Aerospace LLC Models SA26-AT, SA26-T, SA226-AT, SA226-T, SA226-T(B), SA226-TC, SA227-AC (C-26A), SA227-AT, SA227-BC (C-26A), SA227-CC, SA227-DC (C-26B), and SA227-TT airplanes. This proposed AD was prompted by reports of multiple cracks in the steel horizontal tube of the cockpit control column. This proposed AD would require inspection of the cockpit control column horizontal tube with repair or replacement as necessary of the cockpit control column. We are proposing this AD to correct the unsafe condition on these products.