Nav Aids 9

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  1. What is the basic function of a radio altimeter?
    to measure the A/Cs height above terrain directly below
  2. what is the basic principal of operation of a Radio Altimeter?
    Frequency comparison
  3. How does a radio altimeter avoid the risk of height ambiguity?
    By using a low rate of modulation of the sweep band of frequencies
  4. In what frequency band does the radio altimeter operate?
  5. When does the Decision Height (DH) light illuminate?
    When the A/C is below a pilot set radio altitude.
  6. What is the height range of the radio altimeter?
    Zero to 2500ft AGL
Card Set
Nav Aids 9
Radio Altimeter
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