Air Conditioning — Outflow Valve Manual Mode Direct Current Motor Failure
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must ensure that affected Airbus Canada BD-500-1A10 and BD-500-1A11 aircraft are not dispatched if the specified MEL items related to the outflow valve manual mode are inoperative. Compliance with this directive is required from the effective date of March 13, 2026. Maintenance and flight crews should follow updated procedures and restrictions outlined in the directive and related Flight Operation Transmission documents.
Summary
Airworthiness Directive CF-2026-10 issued by Transport Canada addresses a potential failure of the outflow valve manual mode direct current motor on Airbus Canada Limited Partnership BD-500-1A10 and BD-500-1A11 aircraft models. The directive highlights risks related to loss of cabin pressure control due to motor inoperability under high differential pressure conditions. It applies to aircraft serial numbers 50001 and subsequent for BD-500-1A10, and 55001 and subsequent for BD-500-1A11.
What changed
This new Airworthiness Directive prohibits dispatching affected aircraft when certain Minimum Equipment List items related to the outflow valve manual mode are inoperative. It introduces restrictions on operating the cabin pressure control system in manual mode to prevent loss of cabin pressure control and related safety hazards. The directive is an interim measure pending further regulatory action.
Why it matters
This directive is critical for operators and maintenance personnel as it prevents dispatch of aircraft with potential cabin pressure control failures, which could lead to unsafe flight conditions. Compliance ensures continued airworthiness and safety by mitigating risks of excessive differential pressure and inability to rapidly depressurize or evacuate smoke. It also impacts maintenance and operational procedures related to the cabin pressure control system.
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New ADs and bulletins for Airbus BD-500 (A220 Series), Canada Limited Partnership BD-500-1A10 and Canada Limited Partnership BD-500-1A11, summarized like this page, every Monday.