AVMT 205 - Airframe Group V: Aircraft Electrical Systems / Communication/Navigation Systems

(4 credits)

Lecture:

Generators, DC generation systems, and DC power distribution systems. Alternators, AC generation systems, and AC power distribution systems. Starter generators. Constant speed drive and integrated drive generator systems and components. Voltage regulators and over volt and overcurrent protection. Inverter systems. Aircraft wiring sizes, types, selection,

installation, and circuit protection devices. Derating factors in switch selection. Aircraft wiring shielding. Aircraft lightning protection. Instrument or instrument panel removal and installation. Soldering preparation, types of solder, and flux usage. Aircraft electrical connectors, splices, terminals, and switches. Routing and securing wires and wire bundles. Selecting the size of wire in an electrical circuit. Selection or installation of wire terminals. Effects of soldering. Soldering practices. Aircraft lighting systems. Electrical system troubleshooting. Electrical system measurement, adjustment, and testing. Aircraft battery troubleshooting and maintenance. Testing/troubleshooting electrical systems or components. Connecting or disconnecting external power. Maintenance on energized circuits/systems. Maintenance in areas containing aircraft wiring.

Lab:

Inspect aircraft wiring to verify installation and routing. Use a wiring circuit diagram to identify components. Troubleshoot an airframe electrical circuit. Inspect and check anti-collision, position, and landing lights for proper operation. Inspect components in an electrical system. Perform wire terminating and splicing. Assemble an aircraft electrical connector. Solder aircraft wiring. Install airframe electrical wiring, switches, or protective devices. Secure wire bundles. Install bonding jumpers. Determine an electrical load in a given aircraft system. Check the resistance of an electrical system component. Perform a continuity test to verify the condition of a conductor. Perform a test on a conductor for a short to ground. Perform a test on a conductor for a short to other conductors. Check output voltage of a DC generator. Inspect generator brush serviceability and brush spring tension. Troubleshoot a DC electrical system supplied by an AC electrical system. Identify components in an electrical schematic where AC is rectified to a DC voltage.

This class consists of 3 lessons and 4 labs.

Communication/Navigation Systems

Lecture:

Radio operating principles. Radio components. Antenna, static discharge wicks, and avionics identification, inspection, and mounting requirements. Performing maintenance on high power/higher frequency systems. Wire harness routing. Mounting antennas. Electro-static discharge. Working around live electrical systems. Very high frequency, high frequency, and SATCOM systems. Automatic direction finder. VHF omnidirectional range theory, components, and operation. Distance measuring equipment theory, components, and operation. Instrument landing system theory, components, and operation. Global positioning system theory, components, and operation. Traffic collision avoidance systems theory, components, and operation. Weather radar. Radio altimeter theory, components, and operation. Automatic dependent surveillance broadcast theory, components, and operation. Transponder/encoder system. Interphone and intercom systems. Aircraft communication addressing and reporting system theory, components, and operation. Emergency locator transmitter. Autopilot theory, components, and operation. Auto throttle theory, components, and operation. Stability augmentation. ELT testing procedures.

Lab:

Communication and Navigation Systems. Locate and identify navigation and communication antennas. Check VHF communications for operation. Inspect a coaxial cable installation for security. Check an emergency locator transmitter for operation. Inspect ELT batteries for expiration date and locate proper testing procedures. Inspect electronic equipment mounting base for security and condition. Inspect electronic equipment shock mount bonding jumpers for resistance. Inspect static discharge wicks for security and resistance. Inspect a radio installation for security. Communication and Navigation Systems. Make a list of required placards for communication and navigation avionic equipment. Locate and explain autopilot inspection procedures. List autopilot major components. Locate and explain the installation procedures for antennas, including mounting and coaxial connections.

This class consists of 3 lessons and 2 labs.