Maricopa Community Colleges  AVT250   19936-19965 
Official Course Description: MCCCD Approval: 05/25/93
AVT250 19936-19965 L+L 6 Credit(s) 7 Period(s)
Navigation Systems: Advanced
Theory of operation, interfacing, troubleshooting, and repair of automatic directional finder systems, instrument landing systems, traffic avoidance and collision systems, and altitude alert systems. Prerequisites: Permission of Program Director.
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MCCCD Official Course Competencies:
 
AVT250   19936-19965 Navigation Systems: Advanced
1. Explain the operation of automatic direction finder systems. (I)
2. Test, troublehoot, and repair automatic direction finder systems. (I)
3. Explain the operation of very high frequency systems. (II)
4. Test, troubleshoot, and repair very high frequency navigational systems. (II)
5. Explain the operation of the instrument landing systems. (III)
6. Test, troubleshoot, and repair instrument landing systems. (III)
7. Explain the operation of microwave landing systems. (IV)
8. Test, troubleshoot, and repair microwave landing systems. (IV)
9. Explain the operation of traffic avoidance and collision systems. (IV)
10. Test, troubleshoot, and repair traffic avoidance and collision systems transponder systems. (IV)
11. Explain the operation of distance measuring equipment. (IV)
12. Test and troubleshoot distance measuring equipment. (IV)
13. Explain the operation of the radio altimeter. (V)
14. Test, troubleshoot, and repair the radio altimeter. (V)
15. Explain the operation of the altitude alert system. (VI)
16. Test, troubleshoot, and repair the altitude alert system. (VI)
17. Explain the operation of the ground proximity warning system. (VII)
18. Test, troubleshoot, and repair ground proximity warning system components. (VII)
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MCCCD Official Course Outline:
 
AVT250   19936-19965 Navigation Systems: Advanced
    I. Automatic Directional Finders (ADF)
        A. Functions
        B. Frequency ranges
        C. Homing and taking a fix operation
        D. Antennas
          1. Types
            a. Loop
            b. Sense
          2. Locations
          3. Sense and loop radiation patterns
          4. H-field, E-field
          5. Fixed and rotating loop
          6. True null
          7. Quadrantal error corrector
        E. Modes
          1. Antenna
          2. Loop
          3. ADF
          4. Beat frequency oscillator
      II. VHF Omnirange (VOR)
          A. Antennas
            1. Types
            2. Locations
          B. E-types
            1. High altitude
            2. Low altitude
            3. Terminal
          C. Operation
          D. Troubleshoot, interface, test, and repair
        III. Instrument Landing Systems (ILS)
            A. Theory of operation
            B. Functions
              1. Precision approach
              2. Decision height
              3. Auto flight control system accessory unit
              4. ILS relay
              5. Navigation transfer relay
              6. Radio and omega transfer switches
              7. Radio and omega transfer relays
              8. VHF navigation transfer switches
            C. Components
              1. Localizer
                a. Functions
                b. Frequency range
                c. Standard deviation percentages
                d. Modulation of signal
                e. Modulation percentages
                f. Radiation patterns for localizer
              2. Glide slope
                a. Functions
                b. Frequency range
                c. Standard deviation percentages
                d. Modulation of signal
                e. Modulation percentages
                f. Glide slope arrays
              3. Marker beacon
                a. Functions
                b. Frequency range
                c. Modulation of signal
                d. Modulation percentages
                e. Lamp threshold
                f. Locations of markers
              4. Antennas
                a. Localizer
                b. Glide slope
                c. Marker beacon
                d. Microwave landing system
              5. Approach lighting
            D. Troubleshooting, adjustment, and testing procedures
              1. Tic tester
              2. NAV 401 tester
              3. Jc AIR tester
          IV. Microwave Landing Systems (MLS)
              A. Theory of operation
              B. Components
              C. Operations
                1. MLS time reference scanning beams
                2. Elevation and azimuth scanning rates
                3. Circuits and components of MLS
              D. Traffic alert and collision avoidance systems (TACAS), transponder system, and radio altimeter
              E. Transponder functions
                1. Frequencies
                2. Air traffic control primary radar surveillance system
                3. Air traffic control secondary radar surveillance system
                4. Ground station antenna radiation pattern
                5. Antenna locations
                6. Sidelobe suppression
                7. Modes of operation
                8. Air traffic control concepts and functions
                9. Use of different reply codes
                10. Reply pulse traing
                11. Framing pulses
                12. Interrogation
                13. False targets
                14. Antenna types
                15. Special position identification pulse
                16. Transponder operation
                17. Emergency reply code: 7700-7777
                18. Loss of communication systems code: 7600
              F. Mode S transponder and TACAS
                1. Data link
                2. Capabilities
                3. Functions
                4. Airborne separation assurance systems used in conjunction with traffic alert
                5. Collision avoidance system
                6. Data bus operation
                7. Information exchange between transponder and TACAS systems
                8. Circuits and components
                9. Troubleshoot and test procedures
              G. Distance measurement equipment (DME) functions
                1. Principles and characteristics
                2. Controls and modes of operation
                3. Slant range
                4. Lapse time
                5. Nautical and statute miles
                6. Very high frequency omnirange and tactical air command and very high frequency omnirange distance measurement equipment stations
                7. Frequency range
                8. Frequency pairing
                9. Characteristics of reply pulse pairs and interrogation pulse pairs
                10. Squitter pulse
                11. 50-microseond delay
                12. Identification pulse train
                13. Ground speed, range, and time-to-station
                14. Search and track modes
                15. Typical circuits and controls
                16. Indicators
              H. Troubleshoot, interface, test, and repair
            V. Radio Altimeter
                A. Theory of operation
                B. Components
                  1. Antennas
                    a. Types
                    b. Locations
                  2. Decision height light
                  3. Height indicator
                  4. Transmitter and receivers
                  5. Operation
                  6. Radio altimeter
                  7. Troubleshoot, interface, test, and repair
              VI. Altitude Alert System
                  A. Theory of operation
                  B. Altitude alert controller
                  C. Altitude alert annunciators
                  D. Audio alert unit
                  E. Troubleshoot, interface, test, and repair
                VII. Ground Proximity Warning System
                    A. Theory of operation
                    B. Introduction
                      1. Ground proximity warning system
                      2. Components
                    C. Ground proximity warning computer
                    D. Lights and switches
                    E. Operation
                      1. Mode 1
                      2. Mode 3
                      3. Mode 3
                      4. Mode 4
                      5. Mode 5
                    F. Mode envelope
                    G. Modes and annunciation
                    H. Functional diagrms
                    I. Computation data sources
                    J. Operational diagram
                    K. Troubleshoot, interface, test, and repair
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