Practice Test Geeks(CPL) Certified Professional Logistician Practice Test
← All CPL Flashcard Decks

Navigation and Radio Aids Flashcards

7 cards from real CPL 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 and Radio Aids flashcards as text

  1. What does a VOR receiver indicate when the aircraft is directly over the station in the cone of silence?

    Answer: The TO/FROM indicator fluctuates and the CDI swings erratically

    In the cone of silence directly overhead a VOR, the weak signal causes the TO/FROM flag to fluctuate and the CDI to swing erratically.

  2. DME slant range error is most significant when the aircraft is:

    Answer: At high altitude and close to the station

    At high altitude and close to the station, the aircraft's vertical distance represents a large fraction of the slant range, making the error between slant range and ground distance greatest.

  3. While flying outbound on the 180° radial (OBS 180°, FROM indication), the CDI deflects to the left. To intercept the 180° radial, the pilot should turn:

    Answer: Left

    With a FROM indication and normal (outbound) sensing, the CDI deflects toward the course; the pilot turns left toward the needle to intercept.

  4. The FAA-permitted tolerance for an airborne VOR receiver check over a designated checkpoint is:

    Answer: ±4°

    FAR 91.171 requires VOR airborne receiver check accuracy to be within ±4° of the published radial for the designated checkpoint.

  5. While flying a constant heading, an aircraft crosses the 350° radial then the 020° radial of a VOR in 2 minutes. Approximately how many minutes away is the station?

    Answer: 4 minutes

    Time to station = (minutes elapsed × 60) ÷ degrees of bearing change = (2 × 60) ÷ 30 = 4 minutes.

  6. A High altitude VOR (HVOR) provides reliable signal service up to:

    Answer: 130 NM between 14,500 ft MSL and FL600

    An HVOR service volume extends 130 NM laterally between 14,500 ft MSL and FL600, supporting high-altitude en route navigation.

  7. VOR course scalloping (rapid CDI oscillation at a specific location) is most commonly caused by:

    Answer: Multipath signal reflections from terrain or structures near the VOR station

    Scalloping is caused by multipath interference — reflected VOR signals from nearby terrain, buildings, or structures that arrive slightly out of phase with the direct signal.