Practice question

An aircraft reports a Groundspeed of 180 knots and is 15 NM from the touchdown zone on a 3° ILS glide path. What is the approximate required rate of descent to maintain the glide path (ROD = GS * 5)?

  1. 900 feet per minute
  2. 600 feet per minute
  3. 1,200 feet per minute
  4. 450 feet per minute

Answer: A — 900 feet per minute

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