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Navigation Systems & Radar Operations Flashcards

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

Read the first 7 Navigation Systems & Radar Operations flashcards as text

  1. ADS-B Out transmits aircraft position data derived primarily from which source?

    Answer: GNSS (GPS) position combined with barometric altitude

    ADS-B Out broadcasts GPS-derived position along with barometric pressure altitude and other flight data without requiring radar interrogation.

  2. TCAS II Resolution Advisories (RAs) provide pilots with guidance to resolve traffic conflicts in which axis?

    Answer: Vertical (climb/descend)

    TCAS II RAs are exclusively vertical maneuver commands — pilots are directed to climb or descend to resolve the conflict.

  3. When a TCAS RA is issued, the controller's primary responsibility is to:

    Answer: Not issue any control instructions contrary to the RA until the conflict is resolved

    FAA guidance requires controllers to not issue instructions contrary to an RA until the conflict is resolved and the pilot reports returning to clearance.

  4. RVSM (Reduced Vertical Separation Minimum) airspace exists between which flight levels in the contiguous United States?

    Answer: FL290 and FL410

    RVSM applies between FL290 and FL410 inclusive, allowing 1,000 ft vertical separation instead of 2,000 ft.

  5. What is the primary advantage of Wide Area Augmentation System (WAAS) for GPS navigation?

    Answer: It provides integrity monitoring and corrections to improve GPS accuracy to approximately 1–3 meters

    WAAS provides differential corrections and integrity monitoring via geostationary satellites, improving GPS accuracy to 1–3 meters — sufficient for precision approach guidance.

  6. Which radar phenomenon causes a target to appear at an incorrect position due to energy reflected off terrain or buildings?

    Answer: Multipath returns

    Multipath returns occur when radar energy bounces off terrain or structures and creates false or displaced target returns on the display.

  7. Mode S transponder technology improves upon Mode A/C by providing which key capability?

    Answer: Selective interrogation using a unique 24-bit aircraft address

    Mode S assigns each aircraft a unique 24-bit ICAO address, enabling selective interrogation that eliminates garbling and supports data link communications.