Oxygen – Crew Oxygen Cylinder Assembly – Operational Check /; Replacement
Superseded. Comply with 2019-0168, which replaces this document.
- Published
- Effective
- Deadline
- Replaces
- 2018-0245
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Airbus A350-941 and A350-1041 aeroplanes must perform an operational check of each affected oxygen cylinder assembly within six months of 27 November 2018. If discrepancies are found, the affected assembly must be replaced before the next flight. All affected assemblies must be replaced with serviceable assemblies within 18 months of 27 November 2018. Installation of affected assemblies is restricted based on compliance status and aircraft group classification.
Summary
EASA Airworthiness Directive 2018-0245R1 is an amendment addressing safety concerns on Airbus A350-941 and A350-1041 aeroplanes related to the crew oxygen cylinder assemblies with part number 4441227-058-000. The directive mandates operational checks and replacement of affected oxygen cylinder assemblies to prevent potential ignition or fire during ground operational testing. This directive applies to all manufacturer serial numbers of the specified Airbus A350 models.
What changed
EASA Airworthiness Directive 2018-0245R1 revises the original AD 2018-0245 by introducing a new definition of aircraft groups based on the installation status of affected oxygen cylinder assemblies. It clarifies compliance requirements for each group and updates the operational check and replacement instructions accordingly. The revision was prompted by operator requests for clarification after the initial issuance.
Why it matters
This directive is critical for aviation professionals as it addresses a design defect that could lead to fire hazards during ground handling and testing of oxygen systems. Operators, maintenance organizations, and compliance teams must ensure affected assemblies are inspected and replaced within specified timeframes to maintain airworthiness and safety. Non-compliance could result in unsafe conditions and regulatory violations.
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