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Speed and Distance Calculations Flashcards

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

Read the first 7 Speed and Distance Calculations flashcards as text

  1. An aircraft is cruising at 360 knots and is 180 nautical miles from its destination. What is the estimated time of arrival?

    Answer: 30 minutes

    180 nm ÷ 360 knots = 0.5 hours = 30 minutes.

  2. A controller needs an aircraft to cover 240 nautical miles in 40 minutes. What groundspeed must the aircraft maintain?

    Answer: 360 knots

    240 nm ÷ (40/60 hr) = 240 × 1.5 = 360 knots.

  3. An aircraft traveling at 450 knots — how many nautical miles will it cover in 20 minutes?

    Answer: 150 nm

    450 knots × (20/60 hr) = 450 × 0.333 = 150 nm.

  4. Two aircraft are on a direct collision course 50 nautical miles apart, each flying at 300 knots toward the other. How many minutes until potential conflict if no action is taken?

    Answer: 5 minutes

    Combined closure rate = 300 + 300 = 600 knots; 50 nm ÷ 600 knots × 60 = 5 minutes.

  5. Aircraft A is following Aircraft B on the same route. A is 20 nautical miles behind, traveling at 300 knots. B is traveling at 250 knots. How many minutes until A closes the gap to zero?

    Answer: 24 minutes

    Closure rate = 300 – 250 = 50 knots; 20 nm ÷ 50 knots × 60 = 24 minutes.

  6. An aircraft covers 200 nautical miles in 30 minutes. What is its average groundspeed?

    Answer: 400 knots

    200 nm ÷ 0.5 hr = 400 knots.

  7. ATC instructs an aircraft to cross a fix 60 nautical miles away in exactly 12 minutes. What speed must the aircraft maintain?

    Answer: 300 knots

    60 nm ÷ (12/60 hr) = 60 × 5 = 300 knots.