Airworthiness Directive · Amendment 39-15791 · Construcciones Aeronauticas, S.A. (CASA), Model C-212-DF Airplanes
Construcciones Aeronauticas, S.A. (CASA), Model C-212-DF Airplanes
This AD applies to CASA Model C-212-DF airplanes, certificated in any category, serial numbers 444 through 477, except for those airplanes on which CASA Alert All Operator Letter AOL 212-010, Revision 2, dated March 17, 2005, has been done on both upper and lower fittings in both outer and center wings for both left-hand and right-hand sides of the airplane.
The FAA is adopting a new airworthiness directive (AD) for certain CASA Model C-212-DF airplanes. This AD requires a one-time conductivity inspection to determine the material used in manufacturing outer to center wing attachment fittings; and one-time inspections to detect cracks on affected fittings, and corrective action if necessary. This AD results from reports of cracks found in outer to center wing attachment fittings. We are issuing this AD to detect and correct cracks on the upper and lower fittings in both outer and center wings, which could result in reduced structural integrity of the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 10 flight hours after the effective date of this AD, do a high or low frequency eddy current inspection, as applicable, to determine the material used in the eight upper and lower fittings in both outer and center wings for both left-hand and right-hand sides of the airplane, in accordance with CASA Communication Letter COM 212-303, dated March 16, 2006.
(1) If all fittings are verified to be made of 2024-T42 (L-3140-T42) alloy, no further action is required by this AD.
(2) For any fitting verified to be made of 7050-T7451 (L-3767-T7451) alloy, before further flight, perform high or low frequency eddy current inspections, as applicable, for cracks on the eight upper and lower fittings in both outer and center wings for both left-hand and right-hand sides of the airplane, in accordance with CASA Communication Letter COM 212-301, Revision 1, dated March 4, 2006; and CASA Communication Letter COM 212-302, Revision 1, dated March 17, 2006. If any crack is detected, before further flight, replace the affected fitting using a method approved by the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the European Aviation Safety Agency (EASA) (or its delegated agent).
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.
