Oxygen — Supply System Flexible Oxygen Hose — Inspection and Replacement
- Published
- Effective
- Deadline
- Replaces
- 2021-17
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must inspect all flexible oxygen hoses within six months from May 12, 2021, following the applicable Bombardier service bulletins. Any hoses identified as O2C20T1 series must be replaced within specified deadlines, with interim testing if immediate replacement is not possible. Additionally, installation of O2C20T1 hoses as replacement parts is prohibited from May 12, 2021 onward.
Summary
The Canadian Airworthiness Directive CF-2021-17R1 titled "Oxygen — Supply System Flexible Oxygen Hose — Inspection and Replacement" applies to Bombardier BD-700-1A10 and BD-700-1A11 aircraft with serial numbers 9002 to 9879 and 9998. It addresses the inspection and mandatory replacement of certain flexible oxygen hoses manufactured by O2 Corporation that have been found to be cracked, brittle, or broken, posing risks of oxygen leaks and potential fire hazards. The directive mandates inspections, testing, and replacement of affected hoses to ensure continued safe oxygen supply to crew and passengers.
What changed
This revision CF-2021-17R1 updates the original directive CF-2021-17 by clarifying compliance deadlines specifically for the removal and replacement of O2C20T1 series oxygen hoses. It reinforces the prohibition of installing these hoses as replacement parts from May 12, 2021, and confirms the validity of prior inspections and replacements done under earlier service bulletins.
Why it matters
This directive is critical for aviation maintenance and operations teams because oxygen hose failures can compromise crew and passenger safety by disrupting oxygen supply and increasing fire risk. Compliance ensures aircraft maintain airworthiness and regulatory conformity, preventing operational disruptions and potential safety incidents related to oxygen system integrity.
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