UEEEC0021 — Diagnose and rectify faults in air navigation circuits and systems

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What an assessment for UEEEC0021 must cover

166 assessable components: 4 elements (29 performance criteria), 11 performance evidence and 126 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 Prepare to diagnose aviation navigation circuits and system faults

1.1Work health and safety (WHS)/occupational health and safety (OHS) requirements and workplace procedures for a given work area are identified and applied
1.2Aviation operational safety procedures for a given work area are obtained and applied
1.3WHS/OHS risk control measures and workplace procedures are followed in preparation for aviation work activity
1.4Safety hazards that have not previously been identified are documented on job safety assessments, risks assessed and control measures implemented in consultation with appropriate person/s
1.5Extent of faults is determined from reports, circuit diagrams and other relevant documentation, and discussions with appropriate person/s
1.6Appropriate person/s is consulted to ensure the work is coordinated effectively with others involved on the work site
1.7Tools, equipment and testing devices needed to diagnose faults are obtained in accordance with workplace procedures and checked for correct operation and safety

2 Diagnose and rectify aviation navigation system faults

2.1WHS/OHS risk control measures and workplace procedures for carrying out work activities are followed
2.2Need to inspect, test or measure live work is determined in accordance with WHS/OHS requirements and, as required, conducted in accordance with workplace safety procedures
2.3Circuits, machines and plant are checked and isolated in accordance with WHS/OHS requirements and workplace procedures
2.4Logical diagnostic methods are applied to diagnose aviation navigation system faults, employing measurements and estimations of system operating parameters in accordance with system operational requirements
2.5Suspected fault scenarios are tested as being the source of navigation system problems
2.6Source of the fault is identified and competent person/s engaged to rectify the fault in accordance with workplace procedures
2.7Faults in the electronic components of the system are rectified in accordance with navigation system operation standards
2.8Aviation navigation system is inspected and tested to verify the system operates as intended and to specified requirements
2.9Decisions for dealing with unplanned situations are made from discussions with appropriate person/s and job specifications and requirements
2.10Unplanned situations are responded to in accordance with workplace procedures in a manner that minimises risk to personnel and equipment
2.11Diagnosis and rectification activities are carried out efficiently without waste of materials or damage to apparatus, the surrounding environment or services using sustainable energy practices

3 Commission aviation navigation system

3.1WHS/OHS risk control measures and procedures for carrying out the work are followed
3.2Testing and measuring devices are connected and set up in accordance with job requirements and the particular air navigational system
3.3Measuring instruments are set up and adjusted in accordance with transmission/reception requirements and equipment manufacturer instructions
3.4Adjustments are made to provide optimum transmission/reception performance within regulatory requirements
3.5Decisions for dealing with unplanned situations are made from discussions with appropriate person/s and job specifications and requirements
3.6Unplanned situations are responded to in accordance with workplace procedures in a manner that minimises risk to personnel and equipment
3.7Setting up is carried out efficiently without waste of materials or damage to apparatus, the surrounding environment or services using sustainable energy principles

4 Complete and report fault diagnosis and rectification activities

4.1WHS/OHS work completion risk control measures and workplace procedures are followed
4.2Worksite is made safe in accordance with workplace safety procedures
4.3Rectification of faults is documented in accordance with workplace procedures
4.4Appropriate person/s is notified in accordance with workplace procedures that the aviation navigation system faults have been rectified and recommission

Performance evidence

applying logical diagnostic methods
using fault scenarios to test the source of system faults
identifying faults and competency needed to rectify them
rectifying faults in system electronics
verifying that the system operates correctly
documenting fault rectification
dealing with unplanned events
applying sustainable energy principles and practices
commissioning of air navigational system
completing and reporting fault diagnosis and rectification activities
implementing relevant work health and safety (WHS)/occupational health and safety (OHS) requirements and workplace procedures and practices, including the use of risk control measures

Knowledge evidence

electronic communications - air navigation systems, including:
aviation navigation services and principles encompassing:
role of navigation aids in providing air traffic control (ATC) services
functions provided by navigational aids
Rho Theta concept in context of navigational aids used within aviation
relevant International Civil Aviation Organisation (ICAO) (Annex 10) specifications
monitoring – equipment, status and pilot
principle of operation of the non-directional beacon (NDB) encompassing:
simple block diagram of an NDB
frequency band of operation
parameters ICAO requires to be monitored
typical radiation hazard issues
simple block diagram of the aircraft automatic direction finding (ADF) display
NDB used by pilots and ATC
principle of operation of the CVOR/DVOR encompassing:
simple block diagram of a CVOR labelling each part
basic principles of variable and reference information
radio frequency (RF) phasing and far field space modulation
frequency band of operation
features of a typical aircraft display
possible errors and their cause in a CVOR
typical CVOR and DVOR facilities
main differences of operation between CVOR and DVOR
principle of operation of the distance measuring equipment (DME) encompassing:
simple block diagram of a DME
typical timing diagram from interrogation to reply
features of aircraft display system
frequency band of operation
modes of operation
principle of operation of the instrument landing system (ILS):
frequency band of operation
simple diagram of the localiser antenna pattern marking on it the zero DDM line, the represented colour and modulating frequency of each lobe and the clearance signal
simple sketch showing the glide path and the location of the marker beacons listing their identification, frequency and duration
simple block diagram to show the generation of the carrier and sidebands and sideband only signals
ILS antenna arrays and far field radiation patterns
far field phasing and space modulation
terms DDM and SDM
performance requirements for CAT I, CAT II and CAT III ILS
principle of global navigation satellite system (GNSS):
basic principles of the wide area differential global positioning system (WADGPS)
basic principles of the local area differential global positioning system (LADGPS)
NDB technology and maintenance:
key functional modules of a contemporary NDB transmitter
function of the aerial coupling unit
radiation hazard issues, site restrictions and safety considerations in context of an NDB facility
signals in and out of the main components
key features and theory of operation of an NDB antenna (field pattern, capacity hat and ground plane)
hardware configurations of current models of NDB used in the National Airways System of Australia
indicators on NDB equipment that may be used to determine status and locate a fault
method(s) for conducting routine performance measurements on NDB equipment
process for removing an NDB from service
correct test equipment based on measurement tolerance and parameter being measured
correct use of selected test equipment
process for returning the aid to service
locate and identify appropriate NDB documentation (AEIs)
mandated flight check of an NDB
DME technology and maintenance:
key functional modules of a contemporary DME beacon
modes of operation and relevant channel spacing for the interrogation and reply of the beacon
purpose of the “squitter”
typical DME block diagram, the signal flow through the beacon from incoming interrogation to outgoing reply
function of each module in a contemporary DME
term “Gaussian shaped pulse” and why it is used
operation and purpose of the identification signal including test transmissions
definition of “dead time”
monitored parameters of a DME
controls and indicators
correct ON/OFF sequence
process for removing a DME from service
auto-recycle operation
typical function of the CTU for testing
typical alarm registers
measurement of parameters such as beacon delay, pulse spacing, pulse width, Ident, beacon sensitivity, selectivity, reply rate, dead time, frequency, monitor limits, antenna VSWR and using the correct test equipment
correct use of test equipment
correlate the measurements to the standard operating conditions (SOC)
maintenance actions that may be performed without the requirements of a flight inspection
flight calibration check of an DME
process for returning the aid to service
location and identification of appropriate DME documentation (AEIs)
CVOR technology and maintenance:
principles of operation of a VOR and how the component signals are generated in a contemporary CVOR beacon
basic operation and functionality of the transmitter, goniometer, modulation eliminator, monitor and antenna
typical monitored parameters for a CVOR
purpose of monitor bypass
correct use of test equipment and interpretation of results
measurement of performance parameters using the correct test equipment
correct use of test equipment
correlate the measurements to the SOC
maintenance actions that may be performed without the requirements of a flight inspection
maintenance actions that do require a flight inspection
importance of beacon accuracy
DVOR technology and maintenance:
principles of operation of a DVOR and how the component signals are generated in a contemporary DVOR beacon
basic operation and functionality of the modules used in the following sub-systems: carrier generation and modulation, timing sequence generation, sideband amplifier and modulator, sideband antenna commutation, monitor and controller
front panel indications under normal and fault conditions
operation and functionality of the following circuits: carrier amplifier and modulation (CGD, CPA, CDC and CMP), timing signals generation (TSD), reference phase generator (RPG), antenna switching (ASD and ADS), sideband generator (SGN, SMA and SCU), control unit (CTU), monitor unit (MRF, MSC, MFI, MBD and MSD)
typical monitored parameters for a DVOR
correct use of test equipment and interpretation of results
measurement of performance parameters using the correct test equipment
correct use of test equipment
correlate the measurements to the SOC
maintenance actions that may be performed without the requirements of a flight inspection
maintenance actions that do require a flight inspection
importance of beacon accuracy
ILS technology and maintenance:
ILS functional blocks and typical cabinet modules of a localiser and glide path (NM7000 series)
main functional elements of a contemporary marker beacon
location and function of modules and system interconnections: transmitter, changeover, monitor, transmitter controller, remote control, RMS/RMM and power
block diagram illustration at specified points, the signal flow out from the distribution side and/or return via the recombination side of a localiser and/or glide path
operation of a specified localiser antenna array
operation of an ‘M’-array or other specified glide path antenna array
the features and function of the RMM and/or RMS
performance requirements for CAT I, CAT II and CAT III ILS and how these are provisioned in the system hardware and monitoring
function of equipment indicators and controls, including the correct operation of controls to achieve a nominated function
typical monitored parameters for a localiser, glide path and marker beacon
correct use of test equipment (BITE and external) and interpretation of results
measurement of performance parameters using the correct test equipment
correct use of test equipment
correlate the measurements to the SOC
maintenance actions that may be performed without the requirements of a flight inspection
maintenance actions that do require a flight inspection
typical tests and maintenance actions required during a flight calibration of an ILS
relevant Civil Aviation Safety Authority (CASA) national operating standards, workplace policies and procedures
relevant job safety assessments or risk mitigation processes
relevant WHS/OHS and CASA legislated requirements
relevant workplace documentation

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 UEEEC0021

What does an assessment tool for UEEEC0021 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for UEEEC0021 needs to address all 166 unit components: 4 elements with 29 performance criteria, 11 performance evidence requirements, 126 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 UEEEC0021?

Auditori pulls the current release of UEEEC0021 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.

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Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of UEEEC0021, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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