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.
Removable components of structure are those that are installed using bolts and/or screws. Where component removal and installation requires the removal and installation of rivets the applicable unit is either MEA311B, 339A or MEA404B.
The removal and application of faying (contact or overlapping) surface and fuel tank sealants is included, where applicable


1. Removable components of wings, tail booms, pylons, empennage, skids, fairings, nacelles
2. Removable components or sections of non-pressurised fuselages
3. Non-pressurised fuselage entry, cargo, access doors and associated seals (including checking and adjustment of all doors and access panels and associated locking mechanisms)
4. Non-pressurised fuselage windows and transparent panels
5. Where applicable, trim panels, linings, seats, cabin equipment and consoles, floor panels, coverings
6. Applicable emergency equipment (including passenger escape systems, life jackets, rafts, location transmitters, beacons, crew and passenger seat restraints)

Overview of assessment
A person who demonstrates competency in this unit must be able to use maintenance manuals and applicable tools to remove and install removable structural and non-structural components from non-pressurised aircraft while observing all relevant safety precautions.

Critical aspects for assessment and evidence required to demonstrate competency in this unit
The underlying skills inherent in this unit should be transferable into other units that require similar techniques. It is essential that shoring, trestling and lifting requirements and safety precautions applicable to the structure being maintained are fully observed, understood and complied with.
Evidence of transferability of skills and knowledge related to removal and installation is essential. This may be demonstrated through application across a representative range of the areas listed in the Range Statement. An understanding of component handling, attachment methods, adjustment and sealing 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 Group 1 to 6, as listed in the Range Statement. 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 work environment or simulated work environment using tools and equipment specified in maintenance manuals. It is also expected that general-purpose tools, test and ground support equipment found in most routine situations would be used where appropriate.