ATSA Numerical Memory and Differences 2 — Questions and Answers
Question 1: A controller reads off four altitudes in sequence: 8,500 ft, 7,200 ft, 9,100 ft, 6,800 ft. Which altitude was third in the sequence?
- 7,200 ft
- 9,100 ft (Correct answer)
- 8,500 ft
- 6,800 ft
Correct answer: 9,100 ft
The third altitude read in the sequence was 9,100 ft.
Question 2: Two aircraft report headings of 275° and 247°. What is the difference between these headings?
- 18°
- 28° (Correct answer)
- 38°
- 48°
Correct answer: 28°
275 minus 247 equals 28 degrees.
Question 3: A strip shows squawk codes 4521, 4251, 4512, and 4215. Which code contains the digits 2, 5, 1, and 4 in that exact order?
- 4521
- 4251 (Correct answer)
- 4512
- 4215
Correct answer: 4251
Code 4251 contains the digits 4, 2, 5, 1 — the only code whose second digit is 2 and third digit is 5.
Question 4: An aircraft's transponder code changes from 3367 to 3376. Which two digit positions swapped?
- Digits 1 and 2
- Digits 2 and 3
- Digits 3 and 4 (Correct answer)
- Digits 1 and 4
Correct answer: Digits 3 and 4
Positions 3 and 4 changed from 6,7 to 7,6 — the last two digits were transposed.
Question 5: You memorize five frequencies: 118.3, 121.5, 119.7, 125.2, 120.8. Which frequency is highest?
- 121.5
- 119.7
- 125.2 (Correct answer)
- 120.8
Correct answer: 125.2
125.2 MHz is the highest of all five frequencies listed.
Question 6: A data block shows speed as 342 knots. Later it reads 324 knots. By how many knots has the speed changed?
- 8 knots
- 12 knots
- 18 knots (Correct answer)
- 22 knots
Correct answer: 18 knots
342 minus 324 equals 18 knots.
Question 7: Three flight levels are given: FL240, FL270, FL250. Which is the middle value when sorted in ascending order?
- FL240
- FL250 (Correct answer)
- FL270
- FL260
Correct answer: FL250
Sorted ascending: FL240, FL250, FL270 — FL250 is in the middle.
ATSA Numerical Memory and Differences 2
A controller reads off four altitudes in sequence: 8,500 ft, 7,200 ft, 9,100 ft, 6,800 ft.
Which altitude was third in the sequence?