Wing – Slat Track Corrosion and Wear
Superseded. A newer version replaces this document.
- Published
- Effective
- Deadline
- Replaces
- 2021-43
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must clean, inspect, grease, and repair slat tracks according to the revised service bulletin BD500-574001 Issue 002 or later approved revisions. Initial compliance depends on accumulated air time, with deadlines ranging from before 2550 to 4000 total hours or within 850 hours air time from the effective date of 2024-07-31. Subsequent inspections and maintenance must occur at intervals not exceeding 2550 hours air time.
Summary
Canadian Airworthiness Directive CF-2024-26 addresses corrosion and wear issues on the slat tracks of Airbus Canada Limited Partnership aeroplanes, specifically models BD-500-1A10 and BD-500-1A11. The directive mandates inspections, cleaning, greasing, and repairs of slat tracks to prevent potential structural damage caused by slat panel loss. It applies to aircraft with serial numbers R50001 and subsequent for BD-500-1A10, and 55001 and subsequent for BD-500-1A11.
What changed
AD CF-2024-26 supersedes AD CF-2021-43 by requiring the use of a revised service bulletin that includes rework non-destructive testing inspections on slat tracks previously repaired with inappropriate methods. It incorporates a global alternative means of compliance allowing inspections limited to visible slat track portions and cancels the mandatory reporting requirement from the previous AD. The directive also clarifies inspection procedures and access requirements for maintenance.
Why it matters
This directive is critical for operators and maintenance organizations to prevent catastrophic wing damage due to slat track corrosion and wear. It ensures that previously undetected cracks are identified and repaired using appropriate inspection methods, enhancing flight safety. Compliance with the updated inspection and maintenance intervals helps maintain aircraft airworthiness and regulatory compliance.
More for Airbus BD-500 (A220 Series)
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- EASA PAD 26-112Fuselage – Mid Avionics Bay – ModificationSep 23, 2026
- EASA AD CF-2026-45Wings – Discrepant Fasteners at Wing to Fuselage Joint - AmendmentSep 11, 2026
- EASA AD CF-2026-40Time Limits/Maintenance Checks – New and Revised Airworthiness Limitations TasksSep 2, 2026
- EASA AD CF-2026-36Fuselage – Skin Assembly – Discrepant Fasteners at Air Data System Probe Doubler - Replacement
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New ADs and bulletins for Airbus BD-500 (A220 Series), Canada Limited Partnership BD-500-1A10 and Canada Limited Partnership BD-500-1A11, summarized like this page, every Monday.