15 July 1981
| Element | Work Processes | Hours |
| A | Practice the functions to determine the relationship of voltage, current, and resistance in DC electrical circuits by using proper procedures to -- (1) Calculate current, voltage, and resistance in series and parellel DC circuits. (2) Calculate electrical power in DC circuits. (3) Calculate wire size for DC electrical circuits. (4) Calculate induced electromotive force. | 200 |
| B | Practice the functions to measure voltage, current, resistance, continuity, and leakage by using the proper procedure to-- (1) Use DC electrical instruments to measure electrical quantities. (2) Use ohmmeter and/or voltmeter to locate opens and shorts in DC electrical ciruits. (3) Detect electrical leakage in DC electrical circuits. | 200 |
| C | Practice the functions to determine the relationship of voltage current and resistance in AC electrical circuits by using proper procedures to-- (1) Calculate current, voltage, and resistance in AC electrical circuits. (2) Calculate electrical power in AC electrical circuits. (3) Calculate wire size for AC electrical circuits. (4) Calculate electromagnetic induction. | 150 |
| D | Practice the functions of measuring voltage, current, resistance, continuity, and leakage by using proper procedures to--(1) Use AC electrical instruments to measure electrical quantities. (2) Use ohmmeter and/or voltmeter to locate opens and shorts in AC circuits. (3) Detect electrical leakage in AC circuits. | 150 |
| E | Practice the functions of measuring capacitance, inductance, and resistance in aircraft electrical equipment. | 150 |
| F | Practice the functions and theory of solid state circuit operation and calculate and measure electrical power and determine aircraft electrical power requirements for AC generator and inverters. | 150 |
| G | Practice the use of reading and interpreting electrical circuit diagrams. -- (1) Use of commonly used aircraft electrical and electronic symbols. (2) Trade circuits with aircraft wiring diagrams. (3) Practice identifying electronic schematic symbols used in aircraft diagrams. (4) Practice identifying electrical malfunctions by reference to circuit diagrams. | 80 |
| H | Inspect, service, and recharge aircraft batteries--(1) Inspect and recharge batteries. (2) Perform removal installation, and compartment maintenance for aircraft batteries. | 300 |
| I | Troubleshoot and overhaul aircraft electrical systems and components: --(1) Use and application of test equipment in the trouble-shooting of aircraft electrical systems and components. (2) Test the operation and internal circuits of aircraft DC generators. (3) Locate and use overhaul information for aircraft generator repair. (4) Inspect and overhaul aircraft DC generators and motors. (5) Apply test procedures used to protect generator armature shafts from overload. (6) Check operation and control of aircraft AC generators. (7) Test operation of aircraft electrical motors. (8) Check operation of a reversible motor and adjust limit switches. | 1730 |
| J | Practice aircraft drawings usage:--(1) Use drawings, symbols, and schematic diagrams. (2) Identify lines and symbols. (3) Interpret dimensions. (4) Interpret electrical systems drawings. (5) Use installation diagrams and schematics. (6) Use graphs and charts. (7) Use manufacturer's charts and graphs. | 100 |
| K | Perform precision measurements.--Inspect aircraft electrical components for wear. | 50 |
| L | Identify and select aircraft electrical hardware and material for the maintenance of equipment.-- | 30 |
| M | Soldering.--Practice the soldering of electrical connections and make lap joints and printed circuit boards. | 200 |
| N | Inspect, check, troubleshoot, service, and repair heating system. --Troubleshoot aircraft combustion heaters and exhaust type exchangers. | 100 |
| O | Inspect, repair, and troubleshoot quantity indicating systems. | 70 |
| P | Troubleshoot, service, and repair fluid pressure and temperature warning systems. | 150 |
| Q | Install, check, and service airframe electrical wiring controls, switches, indicators, and protective devices.-- (1) Test aircraft fuses, circuit breakers, and switches. (2) Select and install aircraft electrical switches and wiring to components. (3) Install aircraft electrical wiring systems and junction boxes. (4) Install electrical terminal, splices, and bonding jompers. (5) Install aircraft electrical wiring in protective coverings. (6) Check operation of quick-disconnect plugs and receptacles. (7) Protect electrical emergency switches against accidental actuation. (8) Install and route aircraft electrical cables. | 1740 |
| R | Troubleshoot, service, and repair aircraft ignition systems. | 200 |
| S | Troubleshoot, service, and repair electrically controlled propellers and landing gear.-- | 100 |
| T | Replace, inspect, and check operations of aircraft instruments. | 150 |
| Grand | Total | 6000 |
Special Instructions: Work processes completed in a state or federally recognized apprenticeship program will be accepted upon presentation of proper documentation to the appropriate service school.
A total of 432 hours of related instruction is required in order to complete this program. Related instruction credit may be awarded individuals registered in the trade of Electrical Mechanic (Aircraft) taken from an accredited institution, providing the courses are similar to the courses taken for a Electrical Mechanic (Aircraft) program in a community college/vocational school.
End of Pamphlet 621-61 Electrical Mechanic (Aircraft)
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