Action
Notice of proposed rulemaking (NPRM).
Summary
We propose to adopt a new airworthiness directive (AD) for all PILATUS AIRCRAFT LTD. Models PC 12, PC 12/45, PC 12/47, and PC 12/47E airplanes that would supersede an existing AD. 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 a need to incorporate new revisions into the Limitations section, Chapter 4, of the FAA-approved maintenance program (e.g., maintenance manual). The limitations were revised to include an inspection of the wing main spar fastener holes at rib 6 for cracks. We are issuing this proposed AD to require actions to address the unsafe condition on these products.