Landing Gear – Main Landing Gear (MLG) Lower Spindle Pin Corrosion
Superseded. A newer version replaces this document.
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AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must perform initial inspections within specified flight cycle or calendar time limits depending on the aircraft's accumulated flight cycles. Subsequent inspections are required every 3000 flight cycles or 24 months, whichever occurs first. Repairs or replacements must be carried out as per Airbus Canada Service Bulletin BD500-321003, and inspection findings should be reported to Airbus Canada for ongoing monitoring.
Summary
Canadian Airworthiness Directive CF-2021-18 addresses corrosion issues on the main landing gear (MLG) lower spindle pin of Airbus Canada Limited Partnership model BD-500-1A10 and BD-500-1A11 aircraft. The directive mandates inspections and necessary repairs or replacements to prevent structural failure of the MLG lower spindle pin. This AD is an interim safety measure to mitigate risks associated with corrosion and potential fatigue cracking.
What changed
Airworthiness Directive CF-2021-18 introduces mandatory initial and repetitive inspections of the MLG lower spindle pin for corrosion and damage. It requires operators to repair or replace affected parts as specified in Airbus Canada Service Bulletin BD500-321003. The AD also encourages operators to submit inspection findings to support further corrective actions.
Why it matters
This directive is critical for maintaining the structural integrity of the main landing gear, a principal structural element, thereby preventing possible landing gear collapse. Compliance ensures continued airworthiness and safety of the affected aircraft models. Operators and maintenance organizations must monitor and address corrosion to avoid costly failures and operational disruptions.
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New ADs and bulletins for Airbus BD-500 (A220 Series), Canada BD-500-1A10 and Canada BD-500-1A11, summarized like this page, every Monday.