Oxygen — Supply System Flexible Oxygen Hose Deterioration Over Time
- Published
- Effective
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must replace the affected oxygen hoses within specified timeframes based on the aircraft's supplemental type certificate issuance date: within 31 months or 12 months after 6 years for newer aircraft, and within 7 months for older aircraft. Additionally, installation of the specified hose series as replacement parts is prohibited from the directive's effective date. Compliance must follow Bombardier's applicable service bulletins.
Summary
The Canadian Airworthiness Directive CF-2022-34 addresses the deterioration over time of flexible oxygen supply hoses in Bombardier Inc. CL-600-2B16 aircraft, specifically serial numbers 5701 to 5990 and 6050 to 6162 with supplemental type certificate SA06-90. The directive identifies oxygen hoses from the O2C20T1 and O2C20T14 series manufactured by O2 Corporation as prone to cracking, brittleness, and breakage, which can cause oxygen leaks and increase fire risk. This directive mandates inspection and replacement of affected hoses to ensure continued safety and compliance.
What changed
CF-2022-34 introduces mandatory replacement requirements for the specified oxygen supply hoses in affected Bombardier CL-600-2B16 aircraft. It prohibits installation of the O2C20T1 and O2C20T14 hose series as replacement parts from the directive's effective date. The directive also references Bombardier service bulletins for detailed replacement procedures and timelines.
Why it matters
This directive is critical for operators and maintenance organizations to prevent oxygen supply failures and potential fire hazards caused by deteriorated oxygen hoses. Compliance ensures passenger and crew safety by maintaining the integrity of the oxygen delivery system. It also helps avoid regulatory penalties and operational disruptions due to non-compliance.
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