Landing Gear — Nose Wheel Steering System — Steering Control Unit Filter Plate Connector Failure
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must verify aeroplane technical records or inspect the SCU serial numbers within 24 months of the effective date. If affected, the SCU must be removed and replaced, followed by rigging and testing of the nose wheel steering control. Installation of non-compliant SCUs is prohibited unless re-identified per the specified service bulletin.
Summary
Canadian Airworthiness Directive CF-2023-13 addresses a safety issue on Bombardier Inc. model BD-100-1A10 aeroplanes related to the nose wheel steering system. The directive targets the Steering Control Unit (SCU) filter plate connector, part number 46000-01, which may fail due to non-compliance with high intensity radiated field certification requirements. This failure could cause un-commanded steering or lateral runway excursions.
What changed
CF-2023-13 introduces mandatory verification, inspection, and replacement procedures for affected SCUs with non-compliant filter plate connectors. It prohibits installation of certain SCUs unless they have been re-identified with a specific service bulletin number. The directive applies to all serial numbers of the BD-100-1A10 and references specific Bombardier service bulletins for compliance.
Why it matters
This directive is critical for maintaining safe operation of the nose wheel steering system, preventing potential runway excursions caused by electronic component failure. Operators, maintenance organizations, and compliance teams must ensure affected SCUs are identified and replaced to avoid safety risks and regulatory non-compliance. Adhering to this AD helps uphold aircraft airworthiness and operational safety standards.
More for Bombardier BD-100
All 41- EASA AD CF-2025-58Time Limits/Maintenance Checks (TLMC) — Airworthiness Limitations (AWL)Nov 14, 2025
- EASA AD CF-2025-42Flight Controls — Horizontal Stabilizer — Autopilot Inability to Trim Horizontal StabilizerAug 28, 2025
- EASA SIB CASA-2025-03Flight Controls — Unannunciated Loss of Ground Lift Dump Spoilers due to Faulty Throttle Quadrant AssemblyApr 9, 2025
- EASA AD CF-2024-38Flight Controls — Horizontal Stabilizer Trim Actuator (HSTA) — Incomplete OverhaulNov 15, 2024
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