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Aviation Communications and Navigation Systems Flashcards

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

Read the first 7 Aviation Communications and Navigation Systems flashcards as text

  1. What does IFF stand for in military aviation?

    Answer: Identification, Friend or Foe

    IFF stands for Identification Friend or Foe, a transponder-based system used by military forces to identify aircraft as friendly, hostile, or unknown.

  2. IFF Mode 3/A is used primarily for which purpose?

    Answer: Civil and military ATC identification using a 4-digit code

    Mode 3/A is a shared civil/military mode in which aircraft squawk a 4-digit octal code assigned by ATC for identification on secondary surveillance radar.

  3. Which transponder squawk code must an aircrew select when declaring a general emergency?

    Answer: 7700

    Squawk 7700 is the universally recognized emergency code that alerts ATC and other radar facilities that the aircraft is experiencing a general emergency.

  4. What capability does Link 16 provide to naval aviation tactical operations?

    Answer: Secure, jam-resistant digital exchange of tactical data among multiple platforms

    Link 16 is a secure, jam-resistant TDMA data link that distributes targeting, track, identification, and situational awareness data in near-real-time among participants.

  5. In which frequency band does JTIDS (Joint Tactical Information Distribution System), the radio used for Link 16, operate?

    Answer: L-Band (960–1215 MHz)

    JTIDS/Link 16 operates in the L-Band (960–1215 MHz), using frequency hopping across 51 frequencies and time-division multiple access (TDMA) for jam resistance.

  6. Which IFF squawk code indicates that an aircraft has lost radio communications (NORDO)?

    Answer: 7600

    Squawk 7600 signals a loss of two-way radio communications, alerting ATC that the aircraft is NORDO and allowing controllers to apply lost-comms procedures.

  7. What situation does an aircrew indicate when squawking transponder code 7500?

    Answer: Unlawful interference or hijacking

    Squawk 7500 signals that the aircraft is being subjected to unlawful interference (hijacking), prompting an immediate response from military and civil authorities.