Practice Test Geeks(AET) Aircraft Electronics Technician Practice Test
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Technical Knowledge and Skills Flashcards

7 cards from real AET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Technical Knowledge and Skills flashcards as text

  1. An Air Data Computer (ADC) develops aircraft airspeed by processing data from which sensor inputs?

    Answer: Pitot (total) pressure and static pressure

    The ADC computes calibrated and true airspeed from the differential between pitot (total) pressure and static pressure, along with temperature for density corrections.

  2. An AHRS (Attitude and Heading Reference System) uses which primary sensor technology to measure angular rates?

    Answer: Solid-state ring laser gyroscopes or MEMS gyroscopes

    Modern AHRS units use solid-state ring laser gyroscopes (RLG) or microelectromechanical (MEMS) angular rate sensors, eliminating moving parts found in older mechanical gyro platforms.

  3. A radio altimeter (radar altimeter) measures altitude above terrain by:

    Answer: Measuring the time delay of a frequency-modulated continuous wave (FMCW) signal reflected from the ground

    Radio altimeters use FMCW technique — the frequency difference between the transmitted and received signal is proportional to the round-trip time and thus to the height above terrain.

  4. ADS-B Out requires aircraft to transmit which data parameters? (Select best answer)

    Answer: GPS-derived position, altitude, velocity, and aircraft identification

    ADS-B Out transmits GPS-derived horizontal position, barometric altitude, velocity vector, and aircraft identification on 1090 MHz Extended Squitter for surveillance by ATC and other aircraft.

  5. EGPWS (Enhanced Ground Proximity Warning System) improves on basic GPWS primarily by adding:

    Answer: A worldwide terrain database and GPS position for look-ahead terrain alerting

    EGPWS adds a worldwide digital terrain database correlated with GPS position, enabling look-ahead warnings for terrain that GPWS cannot detect until the aircraft is in immediate danger.

  6. When an autopilot system's pitch channel fails to hold altitude and continually pitches nose-up, the most logical first diagnostic step is to check:

    Answer: The pitch attitude signal from the AHRS and the elevator servo feedback signal

    A pitch channel that drives nose-up continuously suggests a runaway condition likely caused by incorrect AHRS pitch attitude data or a faulty elevator servo feedback/position sensor.

  7. When an avionics technician replaces a component in a pitot-static system, which regulatory requirement must be satisfied before return to service?

    Answer: An altimeter system and altitude reporting equipment test per FAR 91.411/91.413

    FAR 91.411 requires an altimeter system test and FAR 91.413 requires altitude reporting (transponder) tests every 24 calendar months, and these tests must be repeated after pitot-static system work.