List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. |
1. | Inspect two stroke petrol engine and components/systems | 1.1 | Isolation tags already attached to the system or related systems are checked and aircraft/engine configured for safe system inspection and operation in accordance with applicable maintenance manual |
| | 1.2 | Two stroke petrol engine and components/systems are visually or physically checked for external and internal signs of defects in accordance with applicable maintenance manual while observing all relevant work health and safety (WHS) requirements, including the use of material safety data sheets (MSDS) and items of personal protective equipment (PPE) |
2. | Test two stroke petrol engines | 2.1 | Aircraft and engine are correctly prepared in accordance with applicable maintenance manual |
| | 2.2 | Assistance is provided with engine and/or system operation during prescribed test procedures to establish serviceability and correct function in accordance with applicable maintenance manual |
3. | Troubleshoot two stroke petrol engines | 3.1 | Available information from maintenance documentation and inspection and test results is used, where necessary, to assist in fault determination |
| | 3.2 | Maintenance manual fault diagnosis guide and logical processes are used to ensure efficient and accurate troubleshooting to line replacement level |
| | 3.3 | Specialist advice is obtained, where required, to assist with the troubleshooting process |
| | 3.4 | Two stroke petrol engine faults are located and the causes of the faults are clearly identified and correctly recorded in maintenance documentation, where required |
| | 3.5 | Fault rectification requirements are determined to assist in planning the repair |
4. | Remove two stroke petrol engine and engine system components | 4.1 | Aircraft is prepared and supported and rendered safe in accordance with the applicable maintenance manual and isolation tags are fitted, where necessary, to ensure the safety of personnel and freedom from damage during engine removal |
| | 4.2 | Removal is carried out in accordance with the applicable maintenance manual while observing all relevant WHS requirements, including the use of MSDS and items of PPE |
| | 4.3 | Engine is tagged and prepared for transport or storage in accordance with the specified procedures |
| | 4.4 | Required maintenance documentation is completed and processed in accordance with standard enterprise procedures |
5. | Install two stroke petrol engine and engine system components | 5.1 | Engine to be installed is checked to confirm correct part or model numbers, modification status and serviceability |
| | 5.2 | Installation is carried out in accordance with the applicable maintenance manual while observing all relevant WHS requirements, including the use of MSDS and items of PPE |
| | 5.3 | Support/safety equipment is removed at the appropriate time to ensure personnel safety and freedom from structural damage |
| | 5.4 | Required maintenance documentation is completed and processed in accordance with standard enterprise procedures |
Evidence required to demonstrate competency in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria under the specified conditions of assessment, and must include:
applying relevant WHS procedures, including the use of PPE and MSDS
using relevant maintenance documentation and aircraft manuals
recognising external and internal signs of defects in two stroke petrol aircraft engines, components and system components through visual/physical inspection
assisting with testing of two stroke petrol engine and engine system operation, be able to operate systems, monitor indications, record parameters and recognise correct function
compiling engine condition monitoring records
rigging and adjusting engine controls and systems
using fault diagnosis guides and equivalent data to accurately and efficiently troubleshoot the causes of unserviceabilities in two stroke petrol engines and engine systems, clearly record details and identify the required rectification actions
correctly removing and installing two stroke petrol engine and engine components.
The underlying skills inherent in this unit should be transferable across a range of inspection, testing, troubleshooting and removal and installation tasks (including the timely involvement of supervisor or other trades) associated with two stroke petrol aircraft engines and engine. It is essential that system testing procedures take into account all safety precautions associated with two stroke petrol engine system operation and that awareness be demonstrated of dual inspection requirements associated with work on engine controls. Ability to interpret inspection procedures and specifications (allowable limits) and apply them in practice is critical.
This shall be demonstrated through application across a number of engine systems or types.
Evidence required to demonstrate competency in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria and include knowledge of:
WHS procedures associated with engine maintenance, including lifting and handling of heavy objects and how to obtain PPE and MSDS
fault diagnosis techniques
two stroke petrol aircraft engine layout and operation:
principles of operation of two stroke engines
component function, construction and materials
engine operation
engine power, efficiency and performance
two stroke aircraft engine fuels, oils and fuel/oil mixing
components, layout and operation of two stroke petrol aircraft engine:
fuel systems
ignition systems:
magneto
coil
spark plugs
ignition harnesses
switches
starting systems
induction systems
cooling systems (liquid and air)
exhaust systems
electrical and instrument system interfaces:
battery charging system
tachometer
removal and installation procedures for two stroke petrol aircraft engines and engine components
petrol two stroke aircraft engine maintenance requirements and troubleshooting
relevant maintenance manuals
relevant regulatory requirements and standard procedures.
Competency should be assessed in the work environment or simulated work environment using tools and equipment specified in maintenance documentation. It is also expected that general-purpose tools and test equipment found in most routine situations would be used where appropriate.
The application of testing procedures and functional checks should indicate knowledge of system operation. Engine system operation knowledge, the relationship of individual components and the links with other systems will be necessary to supplement evidence of ability to carry out engine control system checks and troubleshoot the system within the limits of the aircraft/system fault-finding guide before undertaking any action. The work plan should take account of applicable safety and quality requirements in accordance with the industry and regulatory standards.
The following conditions of assessment represent the requirements of the Regulators (ADF and CASA) and maintenance stakeholders and must be rigorously observed.
A person cannot be assessed as competent until it can be demonstrated to the satisfaction of the workplace assessor that the relevant elements and performance criteria of the unit of competency are being achieved under routine supervision on at least one (1) item from each of the following groups:
two stroke petrol aircraft engines, main components, including reduction gearboxes and accessories/drives
ignition systems
control systems
starter systems
fuel and air systems
cooling systems (liquid or air as applicable to enterprise)
exhaust systems.
This shall be established via the records in the Log of Industrial Experience and Achievement or, where appropriate, an equivalent Industry Evidence Guide (for details refer to the Companion Volume Assessment Guidelines).
Assessors must satisfy the requirements of the National Vocational Education and Training Regulator (Australian Skills Quality Authority, or its successors).
Where the unit is to be used for CASA licensing purposes the Assessor must also meet the criteria specified in the CASR Part 147 Manual of Standards.