Fuselage — Harness Low Clearance Condition in the AFT Fuselage Below Floor
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected BD-500-1A10 and BD-500-1A11 aircraft must perform the required harness installation modification within 9,350 flight hours from the effective date of April 4, 2025. The modification must follow the procedures outlined in section 2 of ACLP Service Bulletin BD500-537004, Issue 001, or any later approved revisions. Contact Transport Canada Continuing Airworthiness for further guidance if needed.
Summary
Canadian Airworthiness Directive CF-2025-18 addresses a low clearance condition involving the hydraulic motor pump harness in the aft fuselage below the floor on Airbus Canada Limited Partnership (ACLP) Model BD-500-1A10 and BD-500-1A11 aircraft. This directive mandates modifications to the harness installation to prevent potential chafing and ignition risks. The affected aircraft include serial numbers 50001 through 50065 and 50067 through 50069 for the BD-500-1A10, and serial numbers 55001 through 55230, 55232, 55233, 55235, 55236, 55238, 55240, and 55242 through 55246 for the BD-500-1A11.
What changed
CF-2025-18 introduces a new requirement to modify the harness installation in the aft fuselage between fuselage frames 80 and 81 to eliminate a low clearance condition. This modification aims to prevent harness chafing that could create an ignition source and potentially lead to an uncontained fire. The directive specifies compliance with ACLP Service Bulletin BD500-537004, Issue 001, or later approved revisions.
Why it matters
This airworthiness directive is critical for maintaining the safety and airworthiness of affected Airbus Canada aircraft by mitigating the risk of fire caused by harness chafing. Operators, maintenance organizations, and compliance teams must address this issue to avoid potential safety hazards and regulatory non-compliance. Timely compliance ensures continued safe operation and adherence to Canadian Aviation Regulations.
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