Assessor Resource

MEA212C
Inspect, test and troubleshoot basic aircraft instrument systems and components

Assessment tool

Version 1.0
Issue Date: May 2024


This unit requires application of hand skills and the use of system/component knowledge and applicable test equipment to inspect, test and troubleshoot basic aircraft instrument systems and components.

Applications include fixed and rotary wing aircraft that have basic instrument systems.

This unit is part of the Avionic Certificate IV (Aircraft Maintenance Stream) training pathway. It covers the competencies required to inspect, test and troubleshoot instrument systems and components fitted to the more basic types of fixed and rotary wing aircraft. he unit is used in workplaces that operate under the airworthiness regulatory systems of the ADF and CASA.

Where a CASA licensing outcome is sought this unit forms part of the CASA requirement for the granting of the chosen Aircraft Maintenance Engineer Licence under CASR Part 66, in accordance with the licensing provisions in Section 3, Assessment Guidelines.

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)

Prerequisites

MEA204C

Remove and install basic aircraft instrument system components

MEA246C

Fabricate and/or repair aircraft electrical components or parts

Co-Requisites

Not applicable

Employability Skills

This unit contains employability skills.



Evidence Required

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.

The Evidence Guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.

Overview of assessment

A person who demonstrates competency in this unit must be able to inspect, test and troubleshoot basic instrument systems and components 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 across a range of inspection, testing and troubleshooting applications (including the timely involvement of supervisors or other trades) associated with aircraft basic instrument systems and components. It is essential that system testing procedures, cleanliness requirements and safety precautions applicable to the system being maintained are fully observed, understood and complied with. Ability to interpret inspection procedures and specifications (allowable limits) and apply them in practice 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 basic aircraft instrument systems and components listed in the Range Statement.

The application of testing procedures should clearly indicate knowledge of system operation, the relationship of individual components and the links with other systems (if applicable) 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.

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 a system and at least one major system component/LRU from each of Groups 1 to 8 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 workplace or simulated workplace using tools and equipment specified in the maintenance manuals. It is also expected that general and special purpose tools, test and ground support equipment would be used where appropriate.

Method of assessment

Guidance information for assessment

Individuals being assessed who have already attained MEA275A Maintain basic light aircraft instrument systems and components, will have satisfied the requirements of this unit with regard to common Range Statement variables. Log of Industrial Experience and Achievement records relating to MEA275A Maintain basic light aircraft instrument systems and components, may be accepted as also meeting the evidence requirements for this unit in the applicable common areas.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

Required skills

Look for evidence that confirms skills in:

recognition of system and component defects/external damage, correct installation, connection of plugs, terminations, attaching hardware (including cabling/harnesses) and security in:

flight instruments

pitot/static systems

direct reading compasses

piston engine indication systems

electrical systems indication

basic fuel quantity indication systems

pneumatic/vacuum indication systems.

applying logic processes, taking and interpreting system measurements, using test equipment and appropriate wiring diagrams and manuals to isolate instrument system malfunctions in the above systems

performing system functional tests and checks to isolate system faults and assess post-maintenance serviceability

applying OHS requirements relevant to instrument system maintenance

Required knowledge

Look for evidence that confirms knowledge of:

the basic layout (block diagram level), function and operation of:

flight systems, including:

altitude (direct reading altimeters)

attitude, including directional gyros and artificial horizons (both air and electrically driven), turn and slip and turn coordinator

airspeed

OAT

engine indication systems, including:

direct reading temperature

direct reading pressure (e.g. oil pressure)

speed including mechanical and electric tachometers

manifold pressure/boost including aneroid, sylphon bellows and dual compartment types

auxiliary direct reading systems, including:

electrical

hydraulic pressure

pneumatic pressure and vacuum

basic fuel quantity indication

basic instrument system maintenance and testing requirements, and troubleshooting procedures

OHS requirements relevant to instrument system maintenance

the operating principles of the above systems and associated with:

atmospheric conditions; properties and effects on aircraft instruments and systems

pressure and temperature sensing elements and their use in aircraft instruments

gyroscopes and their use in aircraft instrument systems

electrical fundamentals

direct reading compass installations and calibration

relevant maintenance manuals

relevant regulatory requirements and standard procedures

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Note

Range statements listed below are numbered to facilitate specification of the assessment requirements included in the Evidence Guide.

Instrument systems and components

Instrument systems and components include:

1. Pitot/static systems and components, ASIs, VSIs and counter-pointer altimeters

2. DGs and AHs (air and electrically driven)

3. Turn and bank and slip/turn coordinators

4. Direct reading compasses

5. Piston engine indication system components (direct reading measuring instruments and temperature indication)

6. Electrical systems indication (voltage, current, power and frequency)

7. Basic fuel quantity indication systems and components

8. Pneumatic/vacuum indication components

Troubleshooting

Troubleshooting involves the use of fault-finding charts or similar, to line replacement level

Application of this unit may relate to:

scheduled or unscheduled maintenance activities

individual or team-related activities

Procedures and requirements

Refer to industry standard procedures specified by manufacturers, regulatory authorities or the enterprise

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Relevant maintenance documentation and modification status, including system defect reports where relevant, are used to identify specific inspection requirements 
Isolation tags are checked and aircraft configured for safe system inspection and operation in accordance with the applicable maintenance manual 
Instrument system components are visually or physically checked for external signs of defects in accordance with applicable maintenance manual 
Defects are correctly identified and reported 
Aircraft and system are prepared in accordance with applicable maintenance manual for the application of power/system operation 
Instrument system is functionally tested in accordance with maintenance manual for evidence of serviceability or malfunction 
System calibration or adjustments are performed in accordance with maintenance manual, as appropriate 
Available information from maintenance documentation, inspection and test results is used, where necessary, to assist in fault determination 
Maintenance manual fault diagnosis guides and logic processes are used to ensure efficient and accurate troubleshooting 
Specialist advice is obtained, where required, to assist with the troubleshooting process 
Instrument system faults are located and the causes of the faults are clearly identified and correctly recorded in maintenance documentation, where required, in accordance with standard enterprise procedures 
Rectification requirements are determined 

Forms

Assessment Cover Sheet

MEA212C - Inspect, test and troubleshoot basic aircraft instrument systems and components
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

MEA212C - Inspect, test and troubleshoot basic aircraft instrument systems and components

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: