Wings — Lower Wing Plank - Inspection
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected MHI RJ Aviation ULC CL-600-2D24 aircraft must perform the detailed visual inspection of the lower wing plank in accordance with MHIRJ Service Bulletin 670BA-57-029 within 8800 flight hours from entry-into-service. If any damage is found, they must contact MHIRJ for an approved repair or disposition referencing this Airworthiness Directive and the service bulletin. Compliance must be ensured by the effective date of 28 September 2021.
Summary
Airworthiness Directive CF-2021-31 is issued by Transport Canada and applies to MHI RJ Aviation ULC model CL-600-2D24 aircraft, serial numbers 15462 through 15475. This directive mandates a one-time detailed visual inspection of the lower wing plank near the flap arm locations to detect dents or damage that may compromise wing structural integrity. The inspection aims to identify manufacturing defects that could lead to cracks and reduce the wing's residual strength.
What changed
This new Airworthiness Directive introduces a mandatory inspection requirement for the lower wing plank on specific CL-600-2D24 aircraft due to suspected dents from manufacturing errors. It requires operators to perform a detailed visual inspection within 8800 flight hours from entry-into-service and mandates approved repairs if damage is found.
Why it matters
This directive is critical for aviation professionals as it addresses a potential structural safety risk that may not be detected by existing inspections. Compliance ensures the continued airworthiness and safety of affected aircraft, helping operators and maintenance teams prevent possible in-flight structural failures. It also provides clear guidance on corrective actions and repair approvals.
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New ADs and bulletins for MHI RJ Aviation CL-600 (Regional Jet) and RJ Aviation ULC CL-600-2D24, summarized like this page, every Monday.