ASTM F3245-19

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it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F3245 − 17 F3245 − 19
Standard Guide for
Aircraft Electronics Technician PersonalPersonnel
Certification
This standard is issued under the fixed designation F3245; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 The purpose of this guide is to address the basic fundamental subject knowledge, task performance, and task knowledge
activities and functions for avionics professionals to be titled Aircraft Electronics Technicians (AETs).
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
F3060 Terminology for Aircraft
2.2 FAA Standards:
FAA AC43.13-1B Acceptable Methods, Techniques, and Practices – Aircraft Inspection and Repair (with Change 1)
FAA AC43.13-2B Acceptable Methods, Techniques, and Practices – Aircraft Alterations
FAA Federal Aviation Regulations for Aviation Maintenance Technicians
FAA-H-8083-30 Aviation Maintenance Technician Handbook – General
FAA-H-8083-30 Aviation Maintenance Technician Handbook – Airframe Volume 1
FAA-H-8083-30 Aviation Maintenance Technician Handbook – Airframe Volume 2
3. Terminology
3.1 See Terminology F3060.
3.2 See Table 1 for task and knowledge definitions relating to the education requirements for Aircraft Electronics Technician
(AET) professionals.
3.3 Explanations for Task Knowledge and Subject Knowledge Levels:
3.3.1 A task knowledge scale value may be used alone or with a task performance scale value to define a level of knowledge
for a specific task. (Example: b and 1b)
3.3.2 A subject knowledge scale value is used alone to define a level of knowledge for a subject not directly related to any
specific task, or for a subject common to several tasks.
4. Significance and Use
4.1 The guide is intended to be used to assess competencies of qualified individuals who wish to become certified as an Aircraft
Electronics Technician through a certification program.
This guide is under the jurisdiction of ASTM Committee F46 on Aerospace Personnel and is the direct responsibility of Subcommittee F46.02 on Avionics and
Information Technology Endorsements.
Current edition approved March 1, 2017April 1, 2019. Published March 2017May 2019. Originally approved in 2017. Last previous edition approved in 2017 as F3245–17.
DOI: 10.1520/F3245-17.10.1520/F3245–19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
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TABLE 1 Task and Knowledge Levels
Scale Value Definition: The Individual
1 IS LIMITED. (Can do simple parts of the task. Needs to be told or shown how to do most of the task)
2 IS PARTIALLY PROFICIENT. (Can do most parts of the task. Needs only help on hardest parts.)
Task Performance Levels
3 IS COMPETENT. (Can do all parts of the task. Needs only a spot check of completed work.)
4 IS PROFICIENT. (Can do the complete task quickly and accurately. Can tell or show others how to do the task.)
a KNOWS NOMENCLATURE. (Can name parts, tools, and simple facts about the task.)
b KNOWS PROCEDURES. (Can determine step-by-step procedures for doing the task.)
Task Knowledge Levels
c KNOWS OPERATING PRINCIPLES. (Can identify why and when the task must be done and why each step is needed.)
d KNOWS ADVANCED THEORY. (Can predict, isolate, and resolve problems about the task.)
A KNOWS FACTS. (Can identify basic facts and terms about the subject.)
B KNOWS PRINCIPLE. (Can identify relationship of basic facts and state general principles about the subject.)
Subject Knowledge Levels
C KNOWS ANALYSIS. (Can analyze facts and principles and draw conclusions about the subject.)
D KNOWS EVALUATION. (Can evaluate conditions and make proper decisions about the subject.)
4.2 The guide is intended to be used in concert with a certification provider’s structure and materials for management, exam
delivery, and candidate preparation.
5. Test Knowledge Requirements
5.1 The following subject, performance, and task knowledge areas shall be assessed by levels (referenced in Table 1) of
competency in the exam items.
5.2 Introductory and General Requirements:
5.2.1 Direct Current (DC) Basic Terms—Knows and can identify the relationship of basic facts and state general principles
about “Direct Current.” The following is a minimum list of terms associated with this subject. (ref. Table 1, Level B)
5.2.1.1 Ampere,
5.2.1.2 Battery,
5.2.1.3 Capacitor,
5.2.1.4 Conductor,
5.2.1.5 Coulomb,
5.2.1.6 Current,
5.2.1.7 Direct Current,
5.2.1.8 Electron,
5.2.1.9 EMF,
5.2.1.10 Farad,
5.2.1.11 Henry,
5.2.1.12 Inductor,
5.2.1.13 Insulator,
5.2.1.14 Left-Hand Rule,
5.2.1.15 Magnetic Permeability,
5.2.1.16 Magnetism,
5.2.1.17 Metric Prefixes,
5.2.1.18 Neutron,
5.2.1.19 Ohm,
5.2.1.20 Proton,
5.2.1.21 Resistance,
5.2.1.22 Scientific Notation,
5.2.1.23 Static Electricity,
5.2.1.24 Volt, and
5.2.1.25 Watts.
5.2.2 Alternating Current (AC) Basic Terms—Knows and can identify the relationship of basic facts and state general principles
about “Alternative Current.” The following is a minimum list of terms associated with this subject. (ref. Table 1, Level B)
5.2.2.1 Alternating Current,
5.2.2.2 Apparent Power,
5.2.2.3 Capacitive Reactance,
5.2.2.4 Delta Wound,
5.2.2.5 Effective Voltage,
5.2.2.6 Frequency,
5.2.2.7 Impedance,
5.2.2.8 Inductive Reactance,
5.2.2.9 Phase,
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5.2.2.10 Polyphase,
5.2.2.11 Power Factor,
5.2.2.12 Rectifier,
5.2.2.13 Resistance,
5.2.2.14 RMS,
5.2.2.15 Sine Wave,
5.2.2.16 True Power, and
5.2.2.17 Wye Wound.
5.2.3 Basic Circuit Theory of Operation—Knows and can identify the relationship of basic facts and state general principles
about “Basic Circuit Theory of Operation.” The following is a minimum list of terms associated with this subject. (ref. Table 1,
Level B)
5.2.3.1 Amps,
5.2.3.2 Bridge Circuits,
5.2.3.3 Complex Circuits,
5.2.3.4 Joules,
5.2.3.5 Kirchhoff’s Law,
5.2.3.6 Ohm’s Law,
5.2.3.7 Parallel Circuits,
5.2.3.8 Power,
5.2.3.9 Resistance,
5.2.3.10 Resistors in Parallel Circuits,
5.2.3.11 Resistors in Series Circuits,
5.2.3.12 Series Circuits,
5.2.3.13 Voltage Drop,
5.2.3.14 Volts, and
5.2.3.15 Watts.
5.2.4 Basic Circuit Troubleshooting—Partially proficient in the performance task of “Basic Circuit Troubleshooting.” Able to
do most parts of the task and will need help only on the hardest parts. Know the task procedures, and can determine the step-by-step
procedures for doing the task. The following is a minimum list of terms associated with the task. (ref. Table 1, Level 2b)
5.2.4.1 Troubleshooting Theory,
5.2.4.2 Basic Circuits,
5.2.4.3 Complex Circuit Voltage Drop,
5.2.4.4 Kirchhoff’s Law,
5.2.4.5 Parallel Circuit,
5.2.4.6 Resistors in Parallel Circuits,
5.2.4.7 Resistors in Series Circuits, and
5.2.4.8 Series Circuit.
5.2.5 Basic Circuit Calculations—Knows and can identify the relationship of basic facts and state general principles about
“Basic Circuit Calculations.” The following is a minimum list of terms associated with this subject. (ref. Table 1, Level B)
5.2.5.1 Alternating Current AC,AC:
(1) Apparent Power,
(2) Capacitance,
(3) Capacitive Reactance,
(4) Effective (working) Voltage,
(5) Frequency,
(6) Impedance,
(7) Inductance,
(8) Inductive Reactance,
(9) Peak Voltage,
(10) Period,
(11) Phase Angle,
(12) Power Factor,
(13) Resonance, and
(14) True Power.
5.2.5.2 Direct Current DCDC:
(1) Amps,
(2) Ohms,
(3) Volts, and
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(4) Watts.
5.2.6 DC / AC Basic Circuit Measurements—Partially proficient in the performance task of “DC / AC Basic Circuit
Measurements.” Able to do most parts of the task and will need help only on the hardest parts. Know the task procedures, and can
determine the step-by-step procedures for doing the task. The following is a minimum list of terms associated with this task. (ref.
Table 1, Level 2b)
5.2.6.1 Ammeters,
5.2.6.2 Ohmmeters,
5.2.6.3 Oscilloscopes, and
5.2.6.4 Voltmeters.
5.2.7 Resistor / Theory of Operation—Knows and can identify the relationship of basic facts and state general principles related
to (ref. Table 1, Level B):
5.2.7.1 Theory of operation,
5.2.7.2 Construction, and
5.2.7.3 The use of color codes to identify resistor/resistance values.
5.2.8 Resistor / Fault Isolation—Partially proficient in the performance task of “Resistor / Fault Isolation.” Able to do most parts
of the task and will need help only on the hardest parts. Know the task procedures, and can determine the step-by-step procedures
for doing the task. The following is a minimum list of terms associated with this task. (ref. Table 1, Level 2b)
5.2.8.1 Improperly Installed Resistors,
5.2.8.2 Open Resistors,
5.2.8.3 Resistors of Incorrect Value, and
5.2.8.4 Shorted Resistors.
5.2.9 Inductors—Knows and can identify the relationship of basic facts and state general principles about “Inductors.” The
following is a minimum list of terms associated with this subject. (ref. Table 1, Level B)
5.2.9.1 Theory of Operation,
5.2.9.2 Calculation of Inductive Reactance,
5.2.9.3 Correct Operation of Inductors (coils), and
5.2.9.4 Use of Multiple Inductors.
5.2.9.5 Isolate Faulty Inductors—Partially proficient in the performance task of “Resistor / Fault Isolation.” Able to do most
parts of the task and will need help only on the hardest parts. Know the task procedures, and can determine the step-by-step
procedures for doing the task. The following is a minimum list of terms associated with this task. (ref. Table 1, Level 2b)
5.2.9.6 Improperly Installed Inductors,
5.2.9.7 Open Inductors, and
5.2.9.8 Shorted inductors.
5.2.10 Capacitor / Theory of Operation—Knows and can identify the relationship of basic facts and state general principles
about “Capacitor Theory of Operation.” The following is a minimum list of terms associated with this subject. (ref. Table 1, Level
B)
5.2.10.1 Calculation of Capacitive Reactance,
5.2.10.2 Operation of Capacitors,
5.2.10.3 Dielectric,
5.2.10.4 Electrolytic,
5.2.10.5 Farad,
5.2.10.6 Fixed Capacitors,
5.2.10.7 Time Constants,
5.2.10.8 Use of multiple Capacitors, and
5.2.10.9 Variable Capacitors.
5.2.11 Capacitor / Fault Isolation—Partially proficient in the performance task of “Capacitor / Fault Isolation.” Able to do most
parts of the task and will need help only on the hardest parts. Know the task procedures, and can determine the step-by-step
procedures for doing the task. The following is a minimum list of terms associated with this task. (ref. Table 1, Level 2b)
5.2.11.1 Improperly Installed Capacitors,
5.2.11.2 Open Capacitors, and
5.2.11.3 Shorted Capacitors.
5.2.12 Transformer / Theory of Operation—Knows and can identify the relationship of basic facts and state general principles
about “Transformer Theory of Operation.” The following is a minimum list of terms associated with this subject. (ref. Table 1,
Level B)
5.2.12.1 Counter EMF,
5.2.12.2 Eddy Currents,
5.2.12.3 Hysteresis, and
5.2.12.4 Primary Winding.
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5.2.13 Transformer / Fault Isolation—Partially proficient in the performance task of “Transformer / Fault Isolation.” Able to do
most parts of the task and will need help only on the hardest parts. Know the task procedures, and can determine the step-by-step
procedures for doing the task. The following is a minimum list of terms associated with this task. (ref. Table 1, Level 2b)
5.2.13.1 Improperly Installed Transformers,
5.2.13.2 Open or Shorted Primary Coil,
5.2.13.3 Primary and Secondary Resistance Testing, and
5.2.13.4 Secondary Coil.
5.2.14 Analog Circuits, Devices, and Switches—Knows and can identify the relationship of basic facts and state general
principles about “Analog Circuits, Devices, and Switches.” The following is a minimum list of terms associated with this subject.
(ref. Table 1, Level B)
5.2.14.1 Derating Factor,
5.2.14.2 DPDT,
5.2.14.3 DPST,
5.2.14.4 Micro Switch,
5.2.14.5 Normally Closed (contacts),
5.2.14.6 Normally Open (contacts),
5.2.14.7 Proximity Switches,
5.2.14.8 Push Button Switches,
5.2.14.9 Relays,
5.2.14.10 Rocker,
5.2.14.11 Rotary,
5.2.14.12 Solenoids,
5.2.14.13 SPDT,
5.2.14.14 Switches, and
5.2.14.15 Toggle.
5.2.15 Power Supply Circuit / Rectifiers—Knows and can identify the relationship of basic facts and state general principles
about “Power Supply Circuit / Rectifiers.” The following is a minimum list of terms associated with this subject. (ref. Table 1,
Level
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