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Aircraft GPS Guide: Selection, Installation, and Verification

Updated Oct 3, 2026 MST

An aircraft GPS provides precise position, ground speed, and navigation data essential for flight planning and situational awareness. Selecting the correct unit, confirming its applicability to your aircraft’s avionics suite, and installing it according to manufacturer and FAA guidance ensures dependable performance and regulatory compliance.

Tools and Materials

  • Aircraft GPS unit (e.g., Yaesu FTA-750L)
  • Installation manual and wiring diagrams
  • Aviation‑grade wiring and connectors
  • Torque wrench
  • Phillips and flathead screwdrivers
  • Cable ties and zip ties
  • Electrical test equipment (multimeter, continuity tester)
  • Mounting hardware (e.g., Guardian Instrument Panel Flush Mount)

Step-by-Step Installation

  1. Verify Aircraft Compatibility

    Consult the aircraft Avionics section and the Antennas catalog to confirm that the GPS model is approved for your aircraft’s navigation suite and that the required antenna type is available. American Aviation Parts can help locate the correct antenna and mounting kit.

  2. Gather Documentation

    Obtain the GPS unit’s installation manual, the aircraft’s ADS-B In & Out documentation, and any applicable Service Bulletins or STCs. Verify that the part’s serial number matches the approved configuration before proceeding.

  3. Prepare Installation Site

    Ensure power availability by checking the 14 Volt system and confirm connector types using the A20 Dual GA Plugs guide. Clean the mounting area and verify clearance for the GPS antenna.

  4. Install GPS Unit

    Mount the GPS using the Guardian Instrument Panel Flush Mount if a panel installation is required. Connect wiring per the manual, torque fasteners to specification, and install the antenna from the Antennas / Accessories page. The Yaesu FTA-750L 5W Portable Airband Nav/Com/Gps Transceiver Yae Fta 750L is a proven GPS option.

  5. Test and Record

    Power up the system and verify GPS lock, data output, and integration with any Stratomaster Xtreme Pfd Efis/Ems Display if used. Perform functional checks per the installation manual and record results in the aircraft logbook. American Aviation Parts offers support for post‑installation verification.