Summary
We are revising an earlier NPRM for the products listed above. 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:
An internal review evidenced that the flight controls tie rod bolts currently installed on the airplane are not in accordance with the design data. Indeed the bolt shank length has been determined too short and the material properties of the spacers have been found inadequate according to the prescribed torque value. Therefore, bolts' threads could be subject to excessive wear, which might induce play in flight controls and consequently, induce vibrations in the control surfaces and reduce the airplane handling.
The proposed AD would require actions that are intended to address the unsafe condition described in the MCAI.