Airworthiness Directive · Amendment 39-21822 · Aerodynamic faring
Pilatus Aircraft Ltd. Airplanes
This AD applies to Pilatus Aircraft Ltd. (Pilatus) Model PC-12/45, PC-12/47, and PC-12/47E airplanes, all serial numbers, certificated in any category, with a Spectre Lift Platform System installed in accordance with Supplemental Type Certificate No. SA00634DE.
The FAA is adopting a new airworthiness directive (AD) for Pilatus Aircraft Ltd. (Pilatus) Model PC-12/45, PC-12/47, and PC-12/47E airplanes with Supplemental Type Certificate (STC) SA00634DE installed. This AD was prompted by a report of strake attachment brackets and the fuselage frame failing at the upper most bracket attachment location. This AD requires inspecting the strake, attachment brackets, surrounding structure, and bolts and replacing components and repairing damage if necessary. The FAA is issuing this AD to address the unsafe condition on these products.
Within 10 hours time-in-service (TIS) after the effective date of this AD and thereafter at intervals not to exceed 150 hours TIS, inspect the fuselage strakes for movement (outside inspection), the strakes and their attachment brackets for loose and missing bolts and screws and structural deformation (inside and outside inspection), and the strake attachment brackets and surrounding structure for discoloration, deformation, cracks, and other structural damage (inside inspection) by following the Accomplishment Instructions—Aircraft, steps A through B.(3) and C.(1) through C.(5), in Pilatus Service Bulletin PC-12 Series, Report Number 12-1700-64-0000, Revision B, dated August 10, 2018.
(1) You must accomplish the inside fuselage inspection regardless of the results of the outside fuselage inspection.
(2) If any movement of the strakes, a loose or missing bolt or screw, discoloration, deformation, a crack, or other structural damage is found during any of the inspections, before further flight, repair using FAA-approved procedures.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
