Landing Gear — Degraded Anti-Skid Performance on a Contaminated Runway
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected BD-500-1A11 aircraft must install the brake control system software update MAB4B-9558-1207 following the procedures in the Airbus Canada service bulletin BD500-324013 edition 002 or earlier approved revisions. This must be completed within 24 months from December 30, 2025, or sooner if already done. Contact Transport Canada for further guidance if needed.
Summary
The Canadian Airworthiness Directive CF-2025-68 addresses degraded anti-skid performance on contaminated runways for Airbus Canada Limited Partnership BD-500-1A11 aircraft, serial numbers 55001 to 55388, 55390 to 55397, 55399, and 55402. This directive mandates corrective action to improve braking system software to prevent wheel lockup and loss of directional control during landing on contaminated surfaces.
What changed
CF-2025-68 introduces a mandatory update to the brake control system software, reference MAB4B-9558-1207, for affected BD-500-1A11 aircraft. This update aims to mitigate braking performance loss and directional control issues identified in service reports and investigations. The directive requires installation of this software update within 24 months of the effective date unless already accomplished.
Why it matters
This directive is critical for operators and maintenance organizations to ensure safe landing performance on contaminated runways, reducing risks of tire damage, wheel lockup, and runway excursions. Compliance enhances aircraft safety and operational reliability by addressing known braking system vulnerabilities. It also ensures adherence to Canadian aviation regulations, avoiding regulatory penalties.
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