Cargo and Accessory Compartments — Environmental Control System (ECS) Ducts — Flammability Non-Compliance
- Published
- Effective
- Replaces
- 2024-21
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 aeroplanes must inspect ECS ducts before 9350 total flight hours or within 60 months from 20 June 2024, whichever occurs first, and install fire-resistant sleeve assemblies if non-compliant ducts are found. Installation of ECS ducts with specified part numbers as replacement parts is prohibited unless accompanied by the fire-resistant sleeve assembly. Ceiling panel liners must be re-identified according to the updated service bulletin instructions.
Summary
Airworthiness Directive CF-2025-10 addresses flammability non-compliance of Environmental Control System (ECS) ducts installed in Airbus Canada Limited Partnership model BD-500-1A10 and BD-500-1A11 aeroplanes. The directive focuses on ECS ducts with part numbers D761189-105, D761189-501, and D762232-509, which were manufactured using a material that failed flammability tests. This directive mandates inspections and retrofits to ensure fire protection compliance in cargo and accessory compartments.
What changed
CF-2025-10 supersedes AD CF-2024-21 and maintains its requirements while adding a new mandate to re-identify ceiling panel liners in affected cargo compartments. It incorporates revised instructions from Airbus Canada Service Bulletin BD500-501003 Issue 003 to improve configuration control. The directive continues to prohibit installation of non-compliant ECS ducts without fire-resistant sleeve assemblies.
Why it matters
This directive is critical for aviation professionals to prevent potential uncontrolled fires in cargo compartments due to insufficient fire protection of ECS duct materials. Operators and maintenance teams must ensure compliance to maintain aircraft airworthiness and safety. Failure to comply could result in regulatory penalties and increased safety risks during flight operations.
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