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Elements and Performance Criteria

  1. Prepare to evaluate aircraft electrical system
  2. Identify principles and techniques required for evaluation of aircraft electrical system
  3. Evaluate aircraft electrical system and system components
  4. Report results

Range Statement

This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.

Aircraft electrical systems include:

AC power generation and control

DC power generation and control

Batteries

Electrical power distribution circuits and circuit protection

External lighting circuits

Internal lighting circuits

Electrical interfaces with aircraft systems, such as:

hydraulic

landing gear and brakes

doors

pneumatic

air conditioning and pressurisation

flight controls

engine controls

anti-ice and de-ice

fire detection and extinguishing

Electrical interfaces with avionic systems, such as:

caution and warning

instrumentation

communications

navigation

pulse

on-board computer systems (e.g. automatic flight and engine control, flight management and on-board maintenance)

in-flight entertainment

Electrical system components include:

Alternators, generators, inverters and transformer/rectifiers

Batteries and emergency batteries

Regulators and indicators, such as voltage, current and frequency

Switches

Relays

Wiring and related hardware

Fuses and circuit breakers

Rheostats

Rotary and linear actuators

Lighting, including strobe lights

Indication and warning lights

Standards and guidance material include:

ASTM F2639-07 Standard Practices for Design, Alteration and Certification of Airplane Electrical Wiring Systems

ARINC Report 609 Design Guidance for Aircraft Electrical Power Systems

CASA AC 21-38(0) Aircraft Electrical Load Analysis and Power Source Capacity

CASA AC 21-99 Aircraft Wiring and Bonding

ADF AAP7001 .054 Airworthiness Design Requirements Manual

FAR Part 23 Airworthiness Standards for Airplanes in the Normal, Utility, Aerobatic or Commuter Categories

FAR Part 25 Airworthiness Standards for Airplanes in the Transport Category

FAR Part 27 Airworthiness Standards for Rotorcraft in the Normal Category

FAR Part 29 Airworthiness Standards for Rotorcraft in the Transport Category

EASA CS-23 Certification Specifications for Aeroplanes in the Normal, Utility, Aerobatic or Commuter Categories

EASA CS-25 Certification Specifications for Airplanes in the Transport Category

EASA CS-27 Certification Specifications for Rotorcraft in the Normal Category

EASA CS-29 Certification Specifications for Rotorcraft in the Transport Category

RTCA DO-160D Environmental Conditions and Test Procedures for Airborne Equipment

Military Specification MIL-E-7016F: Electrical Load and Power Source Capacity, Aircraft, Analysis of

SAE Aerospace AS50881 Wiring Aerospace Vehicles

CASA AC21.16(0) Approval of material, parts, processes and appliances

CASA AC21.145(0) Manufacture of parts during the course of maintenance

CASA AC21.601(0) Australian Technical Standards Order Authorisation

CASA CAAP35 -7(0) Design approval of modifications and repairs

FAA AC 43-13-1B Acceptable Methods, Techniques and Practices – Aircraft Inspection and Repair

Configuration management (CM)

CM is a process for control and documentation of the design and development process and for the management of system, component and software throughout the service life

Integrated logistic support (ILS)

ILS is an integrated approach to the management of logistic disciplines originally developed for the management of military systems from design concept to final disposal at life-of-type. It covers:

reliability engineering, maintainability engineering and maintenance planning

supply and support

support and test equipment

manpower and personnel

training and training support

technical data and publications

computer resources support

facilities

packaging, handling, storage and transportation

design interface

Appropriate technical and professional assistance includes:

Assistance from individuals with CASA maintenance certification licenses or those with supervisory authorisations in the ADF regulatory system

Professional support from engineers employed within:

organisations with CASA continuing airworthiness management or maintenance approvals

approved engineering organisations under the ADF regulatory system

Engineers employed within organisations recognised by overseas airworthiness organisations

WHS, regulatory requirements and enterprise procedures include:

WHS Acts and regulations

Relevant standards

Industry codes of practice

Risk assessments

Registration requirements

Safe work practices

Civil Aviation Safety Regulations (CASRs)

AAP7001 .053 ADF Technical Airworthiness Management Manual

Overseas airworthiness authorities, where applicable, e.g. Federal Aviation Administration, Transport Canada, European Aviation Safety Agency

Performance Evidence

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:

identifying WHS, regulatory and electrical safety requirements, risk management procedures, features and functions of aircraft electrical systems and components, and system design principles and techniques, including:

load analysis and operating environment

system control

indicating and circuit protection requirements

interface requirements between the distribution circuits and aircraft hydro-mechanical and avionic systems/system components

reviewing effects of electricity on humans, dangerous high currents and voltages and automated systems, regulatory requirements related to extra low, low and high voltage applications and relating these to aircraft electrical applications

determining and confirming:

parameters and context of tasks

chain of responsibility

personal functions and responsibilities

team and support functional group interdependencies and communications

appropriate qualifications and delegations

appropriate support, including technical and professional assistance

investigating associated CM and ILS requirements and drafting required data

identifying and drafting data required for compliance with airworthiness regulations

assessing and applying:

basic aircraft electrical system load analysis and design procedures

design standards

regulatory requirements

graphics skills and techniques

evaluating system components and specifications against system design and operating criteria

reporting and documenting results of scoping, principles and techniques identification and evaluation of applications, system schematics and wiring diagrams.

Knowledge Evidence

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:

features of aircraft electrical AC and DC systems, control and distribution, circuit protection and lighting system

interface with aircraft hydro-mechanical systems, such as hydraulic, pneumatic, environmental, anti-ice, flight control and engine control

interface with avionic systems, such as instrumentation, communications, navigation, pulse, on-board computer systems and in-flight entertainment

requirements and procedures for electrical system load analysis

electrical system components and related specifications

wiring types, standards and specifications, including optical fibre

operating environment effects

airworthiness regulator design standards

compliance requirements of the WHS Act and regulations, codes of practice, standards, risk assessment

scope of trade, technical and professional support services required in electrical system applications

management data interface with CM and ILS.