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Numerical Memory and Differences 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 Numerical Memory and Differences flashcards as text

  1. A controller is given the sequence: 7-4-9-2-6. What is the sum of the first and last digits?

    Answer: 13

    The first digit is 7 and the last digit is 6; 7 + 6 = 13.

  2. Two strips list altitudes of 11,000 ft and 9,000 ft. What is the vertical separation in feet?

    Answer: 2,000 ft

    11,000 minus 9,000 equals 2,000 feet of vertical separation.

  3. A pilot reads back a clearance with altitude 14,500 ft, but the original was 15,400 ft. Which digits were transposed?

    Answer: The last two digits

    14,500 vs 15,400 — the digits 4 and 5 in the hundreds and thousands places are swapped.

  4. You are shown the number string 836492 for five seconds, then asked: what is the digit in position 4?

    Answer: 4

    Position 4 in 836492 is the digit 4 (8=1, 3=2, 6=3, 4=4).

  5. An aircraft's beacon code list shows: 1200, 1300, 1400, 7700, 7600. Which code stands out as a special purpose emergency code?

    Answer: 7700

    Squawk 7700 is the general emergency code, making it the primary emergency standout.

  6. A sequence of times is given: 1423, 1347, 1512, 1438. Which time is the earliest?

    Answer: 1347

    1347 is the smallest number and therefore the earliest time.

  7. Two aircraft are at altitudes 22,000 ft and 24,000 ft. A third aircraft must maintain 1,000 ft above the lower and 1,000 ft below the higher. At what altitude must the third aircraft fly?

    Answer: 23,000 ft

    1,000 ft above 22,000 ft is 23,000 ft, which is also 1,000 ft below 24,000 ft.