Summary
We propose to supersede Airworthiness Directive (AD) 97-02-02, which applies to certain 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. AD 97-02-02 currently requires applying torque to the control column pitch bearing attaching nuts, inspecting the bearing assembly, inspecting the elevator control rod end bearing retainer/dust seals, and replacing or installing new parts as necessary. Since we issued AD 97-02-02, an operator experienced a complete loss of elevator control because of failure of the bolt attaching the elevator control rod to the elevator walking beam under the cockpit floor. This proposed AD would prevent loss of pitch control, which if not corrected, could result in loss of airplane control. We are proposing this AD to correct the unsafe condition on these products.