Hydraulic Power — Improperly Torqued Rudder Power Control Unit Hydraulic Fittings
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Airbus Canada BD-500-1A11 aircraft must torque the rudder PCU hydraulic fittings and apply torque seals within 1250 flight hours from May 13, 2024, following the procedures in ACLP A220-AOT-29-17-001 Revision A or later approved revisions. Compliance with the earlier March 1, 2024 revision of the AOT before the effective date also satisfies the directive requirements. Maintenance teams should ensure proper documentation and verification of these actions.
Summary
Canadian Airworthiness Directive CF-2024-13 addresses hydraulic power issues related to improperly torqued rudder Power Control Unit (PCU) hydraulic fittings on Airbus Canada Limited Partnership BD-500-1A11 aircraft, specifically serial numbers 55170, 55172, and 55174 through 55183. The directive mandates corrective actions to prevent hydraulic fluid leakage that could lead to loss of hydraulic systems. It applies to these specific aircraft models and serial numbers.
What changed
This new Airworthiness Directive introduces mandatory corrective actions requiring operators to torque the rudder PCU hydraulic fittings properly and apply torque seals to prevent loosening and leakage. It enforces compliance with procedures outlined in ACLP Alert Operators Transmission A220-AOT-29-17-001 Revision A or later approved revisions. The directive also recognizes prior compliance with an earlier revision of the AOT as acceptable.
Why it matters
This directive is critical for aviation professionals because improperly torqued rudder PCU hydraulic fittings can cause hydraulic fluid leaks, potentially resulting in the loss of one or more hydraulic systems. Ensuring proper torque and sealing improves aircraft safety and reliability, reducing the risk of in-flight hydraulic failures. Operators, maintenance organizations, and compliance teams must address this issue promptly to maintain airworthiness and regulatory compliance.
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New ADs and bulletins for Airbus BD-500 (A220 Series) and Canada BD-500-1A11, summarized like this page, every Monday.