Cargo and Accessory Compartments – Environmental Control System (ECS) Ducts – Flammability Non
Superseded. A newer version replaces this document.
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected BD-500-1A10 and BD-500-1A11 aircraft must inspect ECS ducts before accumulating 9350 total flight hours or within 60 months from June 20, 2024, whichever occurs first. If non-compliant ducts are identified or lot numbers cannot be determined, fire-resistant sleeve assemblies must be installed before further flight. Additionally, installation of specified ECS ducts as replacement parts is prohibited unless sleeves are installed as per the directive.
Summary
Canadian Airworthiness Directive CF-2024-21 addresses flammability non-compliance issues in Environmental Control System (ECS) ducts installed on Airbus Canada Limited Partnership model BD-500-1A10 and BD-500-1A11 aircraft. The directive identifies certain ECS ducts made with non-compliant material APF1180-7781 that fail flammability requirements and mandates inspection and retrofit actions. It also prohibits installation of affected ECS ducts without fire-resistant sleeve assemblies.
What changed
This new Airworthiness Directive introduces mandatory inspections to identify non-compliant ECS ducts by lot number and requires installation of fire-resistant sleeve assemblies over these ducts if found. It also prohibits the installation of ECS ducts with specific part numbers as replacement parts unless accompanied by the required fire-resistant sleeves. The directive applies to in-service aircraft and new installations.
Why it matters
This directive is critical for maintaining fire safety standards in cargo compartments by ensuring ECS ducts meet flammability requirements. Operators and maintenance organizations must comply to prevent potential uncontrolled fires due to insufficient fire protection in ECS duct materials. Compliance ensures continued airworthiness and regulatory adherence under Canadian Aviation Regulations.
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