Airworthiness directives › 2022-18-17
AD 2022-18-17 Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
Applicability*9
This AD applies to MHI RJ Aviation ULC (type certificate previously held by Bombardier, Inc.) Model CL-600-2D24 (Regional Jet Series 900) airplanes, certificated in any category, having serial number 15462 through 15475 inclusive.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Prior to the accumulation of 8,800 total flight hours or within 30 days after the effective date of this AD, whichever occurs later, perform a detailed visual inspection for damage (including dents, cracks, discoloration, gouges, scratches, or other surface damage) of the outer aft lower skin at wing stations (WS) 54.55, WS 128.00, WS 179.00, WS 220.00, and WS 264.00 in accordance with paragraph B., “Procedure,” of the Accomplishment Instructions of MHI RJ Aviation Service Bulletin 670BA-57-029, dated February 2, 2021. Do all applicable corrective actions before further flight. If any damage is found during the inspection, before further flight, repair using a method approved by the Manager, New York ACO Branch, FAA; or Transport Canada Civil Aviation (TCCA); or MHI RJ Aviation ULC's TCCA Design Approval Organization (DAO). If approved by the DAO, the approval must include the DAO-authorized signature.
Unsafe condition
This AD was prompted by a report of a manufacturing error that can create dents on the lower wing plank, close to the flap arm locations at certain wing stations; as a result, cracks could develop and weaken the structural integrity of the wings before being detected by any existing required inspections. The FAA is issuing this AD to address dents, cracks, and other damage, that, if not detected and corrected, could lead to reduced structural integrity of the wings.
Affected ADs
None.
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