Landing Gear — Main Landing Gear - Corrosion
- Published
- Effective
- Deadline
- Replaces
- 2019-17
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Affected operators must perform detailed visual inspections and necessary rectifications of MLG outer cylinders, shock strut assemblies, and trunnion pins according to specified Bombardier Service Bulletins and Aircraft Maintenance Manual tasks. Compliance deadlines vary based on component hours air time and service age, generally requiring action within 6500 hours or 3 years, or sooner for older or more used parts. Maintenance teams should ensure use of the latest approved revisions of service and maintenance documents.
Summary
Canadian Airworthiness Directive CF-2019-17R1 addresses corrosion issues on the main landing gear (MLG) of Mitsubishi Heavy Industries RJ Aviation ULC aeroplanes, specifically models CL-600-2C10, CL-600-2C11, CL-600-2D15, CL-600-2D24, and CL-600-2E25. The directive mandates inspections, rectifications, and modifications of MLG outer cylinder assemblies, dressed shock strut assemblies, and trunnion pins to prevent potential MLG collapse due to corrosion. It applies to specific part numbers and serial numbers of MLG components and updates previous applicability and compliance criteria.
What changed
This revision CF-2019-17R1 expands the applicability to include additional CL-600 models and specific MLG dressed shock strut assemblies with certain part numbers. It corrects the referenced Aircraft Maintenance Manual task revision numbers and updates compliance time criteria for trunnion pins based on hours air time and service duration. The directive also updates the Type Certificate number and clarifies maintenance instructions applicability.
Why it matters
This directive is critical for aviation professionals to ensure the structural integrity of the main landing gear, preventing potential gear collapse that could compromise flight safety. Operators and maintenance organizations must comply with the inspection and rectification schedules to maintain airworthiness and regulatory compliance. Failure to address corrosion risks could lead to costly repairs, grounding of aircraft, and safety incidents.
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