Oxygen — Therapeutic Oxygen Hoses — Inadequate clearance from Electrical Harness
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Bombardier BD-700-1A10 aircraft must perform detailed inspections of therapeutic oxygen hoses and electrical harnesses within 10 years of January 28, 2025. Any damaged parts must be repaired or replaced, clearance maximized, and protective measures installed according to the applicable Bombardier Service Bulletins. Testing must be conducted after repairs to verify system functionality before further flight.
Summary
Airworthiness Directive CF-2025-02 addresses inadequate clearance between therapeutic oxygen hoses and electrical harnesses on Bombardier Inc. model BD-700-1A10 aeroplanes. This directive mandates inspections and corrective actions to prevent potential damage that could impair the firewall hydraulic shutoff valve. The affected aircraft include various serial numbers of the BD-700-1A10 Global Express, Global XRS, Global 6000, and Global 6500 models.
What changed
This new Airworthiness Directive introduces mandatory inspections of therapeutic oxygen hoses and electrical harnesses for damage and clearance issues. It requires repair or replacement of damaged components, maximization of clearance, installation of protective barriers, and system testing as specified in Bombardier Service Bulletins dated June 12, 2024. The directive applies to a wide range of BD-700-1A10 serial numbers and sets a compliance deadline of 10 years from the effective date.
Why it matters
This directive is critical for aviation professionals because inadequate clearance and protection between oxygen hoses and electrical harnesses can lead to damage causing latent failures of the firewall hydraulic shutoff valve. Such failures could prevent effective control of a power plant fire in the presence of hydraulic fluid leaks, posing serious safety risks. Operators, maintenance organizations, and compliance teams must ensure adherence to avoid potential in-flight hazards and regulatory non-compliance.
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