MEA222 — Inspect, test and troubleshoot aircraft oxygen systems and components
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What an assessment for MEA222 must cover
32 assessable components: 3 elements (12 performance criteria), 8 performance evidence and 12 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.
Elements & performance criteria
1 Inspect oxygen system components
- 1.1Relevant maintenance documentation and modification status, including system defect reports, where relevant, are used to identify specific inspection requirements
- 1.2Isolation tags are checked and aircraft configured for safe system inspection and operation in accordance with the applicable maintenance manual
- 1.3Oxygen system components are visually or physically checked for external signs of defects in accordance with applicable maintenance manual while observing all relevant work health and safety (WHS) requirements
- 1.4Defects are correctly identified and reported
2 Test/adjust oxygen systems
- 2.1Aircraft and system are prepared in accordance with applicable maintenance manual for the application of power/system operation
- 2.2Oxygen system is functionally tested in accordance with maintenance manual for evidence of serviceability or malfunction
- 2.3System calibration or adjustments are performed in accordance with maintenance manual, as appropriate
3 Troubleshoot oxygen systems
- 3.1Available information from maintenance documentation, inspection and test results is used, where necessary, to assist in fault determination
- 3.2Maintenance manual fault diagnosis guides and logic processes are used to ensure efficient and accurate troubleshooting to line replacement level
- 3.3Specialist advice is obtained, where required, to assist with the troubleshooting process
- 3.4Oxygen system faults are located and the causes of the faults are clearly identified and correctly recorded in maintenance documentation, where required
- 3.5Rectification requirements are determined
Performance evidence
- applying appropriate WHS practices
- using approved maintenance documentation and aircraft publications relating to aircraft oxygen systems and components for the purpose of system testing
- general application of logical fault-finding and use of truth tables during troubleshooting
- interpreting oxygen system instruments, gauges, warning annunciators and test equipment, i.e. leak detectors
- applying the methods used to locate, identify and access oxygen system components for inspection, testing and troubleshooting
- demonstrating the procedure to replenish a dry breathing oxygen system, including: • correct identification of oxygen ground trolleys • maximum charging pressures for low and high pressure systems • safety precautions to be adhered to during replenishment • correct order of procedural replenishment steps
- demonstrating the procedure to purge a dry breathing oxygen system, including: • reasons for the requirement to undertake a purging operation • identification of acceptable system purging gases • safety precautions to be adhered to during purging • employing correct techniques when purging oxygen storage cylinders or systems.
- It is essential that system testing procedures, cleanliness requirements and safety precautions applicable to the oxygen system being maintained are fully observed, understood and complied with. Ability to interpret inspection procedures and specifications (allowable limits) and apply them in practice across a range of inspection, testing and troubleshooting applications (including the timely involvement of supervisors or other trades) is critical. Evidence of transferability of skills and knowledge related to inspection, testing and troubleshooting is essential. This is to be demonstrated through application across a range of aircraft oxygen systems and components listed in the Assessment Conditions.
Knowledge evidence
- component attachment methods, connection of hardware and couplings and their physical security within the aircraft
- oxygen system isolation
- properties of aircraft oxygen and requirements for aircrew/passengers
- properties of the atmosphere and how they vary
- defining terms and units of measurement relating to aircraft altitude and system pressures
- layout of low and high-pressure dry breathing oxygen systems and components
- operation of oxygen systems and components, including: • pressure demand regulators • passenger service regulators • altitude sensing barometers
- methods by which gaseous dry breathing oxygen is stored in both the aircraft and within the workplace environment. Reference to storage trolleys, aircraft cylinders and chemical oxygen cylinders is required
- oxygen system maintenance requirements and troubleshooting procedures
- relevant WHS practices
- relevant maintenance manuals
- relevant regulatory requirements and standard procedures.
Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.
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Questions about assessing MEA222
What does an assessment tool for MEA222 need to cover?
To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MEA222 needs to address all 32 unit components: 3 elements with 12 performance criteria, 8 performance evidence requirements, 12 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.
How does Auditori generate an assessment tool for MEA222?
Auditori pulls the current release of MEA222 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.
Is the first assessment tool really free?
Yes. Every new account includes one free credit — enough to generate the complete assessment tool for MEA222 — with no card and no subscription required. After that it's pay-as-you-go per unit.
Can I check my existing MEA222 assessment instead of generating a new one?
Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of MEA222, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.
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