Elements and Performance Criteria

Application of this unit may relate to:
Scheduled or unscheduled maintenance
Individual or team related activities
Procedures and requirements refer to industry standard procedures specified by manufacturers, regulatory authorities or the enterprise.


1. Oxygen pressure cylinders, valves, gauges
2. Regulators, masks (including other integrated systems), pipes, hoses and fittings
3. Chemical generators
4. Liquid Dry Breathing Oxygen (LDBO) converters

Overview of assessment
A person who demonstrates competency in this unit must be able to remove and install the components of aircraft oxygen systems while observing all relevant safety and component handling precautions.

Critical aspects for assessment and evidence required to demonstrate competency in this unit
It is essential that oxygen system cleanliness requirements and safety precautions applicable to system component handling are fully observed, understood and complied with. These cleanliness requirements extend to all tooling and hardware associated with oxygen system maintenance.
Evidence of transferability of skills and knowledge related to removal and installation is essential. This is to be demonstrated by application across a range of aircraft oxygen system components listed in the Range Statement. An understanding of the attachment methods, connection hardware, and the need for adjustment or rigging and system operation as it relates to the work must be demonstrated before undertaking any action. The work plan should take account of applicable safety and quality requirements in accordance with the industry and regulatory standards.
A person cannot be assessed as competent until it can be demonstrated to the satisfaction of the workplace assessor that the relevant elements of the Unit of Competency are being achieved under routine supervision on at least one item from each of Groups 1 and 2 (Groups 3 and 4 may be omitted where they are not applicable to the enterprise). This shall be established via the records in the Log of Industrial Experience and Achievement or, where appropriate, an equivalent industry Evidence Guide.

Context of and specific resources for assessment
Competency should be assessed in the workplace or simulated workplace using tools and equipment specified in the maintenance manuals. It is expected that dedicated tools, test and ground support equipment is used in routine oxygen situations.