Features:

1. Fully functional and configured like a typical aircraft Navigation
2. Fully functional and configured like a typical aircraft Magnetic Compass
3. Compass System provides the pilot with a simple, comprehensive visual display of the aircraft’s heading and position in relation to a desired course.
4. Complete slaved compass system that includes a magnetic slaving transmitter, a slaving control and compensator unit, a directional gyro for stabilization of the system, and the Pictorial Navigation Indicator (PNI) itself.
5. Combine the display functions of the standard Directional Gyro with VOR/LOC course deviation indication and Glideslope deviation and flag into one compact display.
6. The Pictorial Navigation Indicator provides a pictorial display of the horizontal navigation situation. Also provides manual controls for course and heading datum selections. Outputs from the system are for automatic pilot or flight director, VOR receivers and additional compass loads
7. The Directional Gyro is a remote mounted unit which, in conjunction with the Magnetic Azimuth Transmitter, provides a gyro-stabilized magnetic heading to the system Indicator. In addition to the slaving circuitry this unit contains an internal power supply which provides excitation voltages for the Magnetic Azimuth Transmitter and positive and negative D.C. voltages for the Pictorial Navigation Indicator and the Slaving Accessory.
8. The Magnetic Azimuth Transmitter senses the direction of the earth’s magnetic field and transmits this information to the Pictorial Navigation Indicator.
9. The Slaving Accessory is a panel mounted unit which contains the slaving meter, slaving switches, and corrector circuitry which compensates for the effect of local magnetic disturbances on the Magnetic Azimuth Transmitter.
10. The trainer should allow trainees to understand fundamentals of aircraft magnetic compass system and its components.

Components:

1. NAV/COM Device
2. Pictorial Navigation Indicator (HSI)
3. Directional Gyro
4. Flux Detector (The Magnetic Azimuth Transmitter)
5. Slaving Accessory
6. NAV Antenna
7. COM Antenna
8. Digital instrument
9. DC Power Box
10. Circuit Breaker

Components Technical Specs

1. NAV/COMM device
   • Solid state, gas discharge digital display NAV/COMM Transceiver
   • 720 or 760 frequency COMM available
   • 200-channel NAV receiver
   • Built-in VOR Converter
   • Maximum 25 kHz channel spacing (It should be 8.33 kHz)
   • Frequency (COM) range should be minimum 118.000 to 136.975
   • Nav receiver frequency range: 108.00 MHz to 117.95 MHz in 50 kHz increments
   • VOR/LOC converter accuracy:
   • VOR – Typical bearing error of less than 0.5° with precision track selector (2° max. error)
   • LOC–Typical centering error of less than 3μA (7μA max. error).
   • Receiver selectivity:
   • 6dB at 34.8 kHz minimum
   • 80dB at 84.0 kHz maximum
   • Input voltage range should be 14 or 28 VDC
   • Operating temperature range should be minimum -18 to +50 C 
   • There should be Built-in VOR/Localizer converter in NAV/COMM device
   • VOR receiver displays to/from and radial
   • Active and standby flip-flop frequencies
   • Volume control
   • Frequency memory and recall
   • display
   • Output should be minimum 10 watt
   • Frequency stability: ±0.0015%
   • Adjustable up to 100mW into 500 ohms headphones
   • 6dB bandwidth ± 8.1 kHz
   • 60dB bandwidth ± 20.0 kHz
   • Physical dimensions:
   • Width: 6.25 inches (15.88 cm) Height: 2.05 inches (5.21 cm) Depth: 10.16 inches (25.81 cm) including connector
   • There should be an original installation manual.
2. Pictorial Navigation Indicator
   • Lubber Line
   • Nav Warning Flag
   • Heading Select Bug
   • Compass warning Flag
   • Selected Course pointer
   • To/From indicator
   • GS Deviation Scale
   • Compass Card
   • VOR/LOC Deviation Bar
3. One (1) headset
   • 24 dB NRR hearing protection
   • 3.5mm Music input port
   • EM56 noise reflective cup mic
   • Clear Hear performance audio speakers
   • Foam Fit comfort ear seals 
   • Deep Pocket ear canals
   • Wind block foam mic muff
   • Stainless steel adjustable headband
4. Trainer should a DYNAMIC MICROPHONE
   • Impedance: 50-600 ohms.
   • Includes: 5 ft. coiled cord with right-angle plug and hanger bracket.
5. Trainer should have VOR/LOC antenna
   • Frequency should be at least 108 to 118 MHz and 328-336MHz 
   • Impedance should be 50 Ohms
   • Pattern should be Omni-Directional
   • Antenna should have an original cable
6. Trainer should have VHF-COM antenna
   • Frequency 118 to 137 MHZ
   • Polarization and Vertical
   • Impedance 50 Ohms
   • Connector – BNC Female
   • Antenna should have an original cable
7. Directional Gyro
   • Remote mounted
   • Original Mounted Tray
   • Power: 14-volt or 28-volt dc
   • 300-degree free turn able system for testing
8. Flux Detector (The Magnetic Azimuth Transmitter)
9. Slaving Accessory
   • Slave/Free Gyro Switch
   • Slaving Meter indicator
   • CW/CCW Adjustment
10. Digital instrument for Gyro degree
    • Size: Min 7 inch
    • Touchable
    • Real Times
11. NAV/COM Tester
    1. Accuracy of All Carrier Frequencies;
       • Basic accuracy= +/- 2.5 PPM plus +/-1.0 PPM aging per year.
       • Variation over temperature= +/- 2 PPM over -20 to +50 °C range.
    2. Output Power;
       • ADF = -12 +/-3 dbm
       • VOR= -10 +/-3 dbm
       • ILS Localizer= -10 +/-3 dbm
       • ILS GS = -17 +/-3 dbm
       • ILS MKR = -15 +/-3 dbm
       • DME = -12 +/-3 dbm
    3. TXPDR = -12 +/-3 dbm
    4. VOR radial accuracy; +/- 1 deg
    5. ILS localizer DDM accuracy; +/- 15%
    6. ILS glide slope DDM accuracy; +/- 15%
    7. DME accuracy; +/- 0.1NM
    8. Transponder specs;
       • PRF 235+/-5 Mode A,C 50 +/-2 Mode S
       • P2 level equal P1 +/- 0.1 dbm
       • P2 position 2 +/-0.01 uS from P1
       • P3 position 8 +/- .01uS or 21 +/- 0.02uS Rel to P1
       • Pulse width 0.8 +/-0.01uS P1,P2,P3
       • Frequency 1030 MHz Tx, 1090 MHz Rx , +/- 2.5ppm
       • Reply % 0 to 100% displayed +/- 0.5%
       • Reply window 2.5 to 3.5uS F1 from P3
       • Pulse Width reads out to +/- 50nS resolution
       • X Data Pulse Must=0 for good read
       • SPI Displays ID message

NOTE: Avionics devices brand/model and some technical specs can be change due to market availability.