Flight Controls — Reversion to Flight Control Direct Mode
- 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-500-1A10 and BD-500-1A11 aircraft must install the specified PFCC software update within 36 months from the effective date of December 7, 2022. Maintenance teams should follow the instructions in Airbus Canada Service Bulletin BD500-270020 and review any prior repairs before applying the update. Contact Transport Canada for further guidance if needed.
Summary
The Canadian Airworthiness Directive CF-2022-65 addresses a flight control system issue on Airbus Canada Limited Partnership BD-500-1A10 and BD-500-1A11 aircraft models equipped with the CAT IIIB Autoland option. This directive mandates a software update to the primary flight control computer (PFCC) to prevent unintended reversion to direct flight control mode during instrument landing system (ILS) approaches. The update improves flight safety by ensuring stable autopilot operation during critical landing phases.
What changed
CF-2022-65 introduces a mandatory installation of PFCC software version 810-0337-008, which resolves the unsafe condition of the flight control system reverting to direct mode during ILS approaches. This is a new regulation requiring affected aircraft to receive the software update as specified in Airbus Canada Service Bulletin BD500-270020. The update also includes control law changes that necessitate review of previous repairs before installation.
Why it matters
This directive is critical for operators and maintenance organizations to maintain safe autopilot functionality during CAT IIIB autoland operations. Failure to comply could result in unexpected flight control behavior, increasing pilot workload and potential safety risks during landing. Compliance ensures continued airworthiness and adherence to Canadian Aviation Regulations.
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