CTO Airspace Structure & Regulations 3 — Questions and Answers
Question 1: Class C airspace typically extends from the surface to what altitude above the primary airport?
- 2,500 feet AGL
- 3,000 feet AGL
- 4,000 feet AGL
- 5,000 feet AGL (Correct answer)
Correct answer: 5,000 feet AGL
Standard Class C airspace extends from the surface to 4,000 feet above the primary airport's elevation, though specific dimensions are published on sectional charts.
Question 2: What action must a non-participating pilot take when a VIP Movement TFR is active under FAR 91.141?
- Fly no lower than 3,000 feet AGL through the TFR
- Avoid the TFR area entirely unless ATC authorized (Correct answer)
- File an IFR flight plan to transit the TFR
- Squawk 7500 when entering the TFR
Correct answer: Avoid the TFR area entirely unless ATC authorized
FAR 91.141 TFRs for VIP movements prohibit flight within the TFR unless the aircraft is operating under ATC authorization.
Question 3: A Mode C veil requires all aircraft within what radius of a Class B primary airport to be equipped with an encoding altimeter?
- 5 NM
- 10 NM
- 20 NM
- 30 NM (Correct answer)
Correct answer: 30 NM
The Mode C veil requires all aircraft operating within 30 nautical miles of a Class B primary airport to be equipped with an altitude encoding transponder.
Question 4: Which document provides the legal basis for airspace classification in the United States?
- FAR Part 71 (Correct answer)
- FAR Part 73
- FAR Part 91
- FAR Part 95
Correct answer: FAR Part 71
FAR Part 71 designates the airspace areas including Class A, B, C, D, and E airspace, Federal Airways, and reporting points.
Question 5: When does Class D airspace become effective for an airport that has a part-time control tower?
- 24 hours a day, 7 days a week
- Only during published tower hours of operation (Correct answer)
- Only during IFR conditions
- Whenever the ATIS is broadcasting
Correct answer: Only during published tower hours of operation
Class D airspace is effective only during the published hours of operation of the control tower; outside those hours, it reverts to Class E or G.
Question 6: An aircraft enters Class C airspace without establishing two-way radio communication. What violation has occurred?
- A waivable infraction that requires a logbook entry
- A deviation from FAR 91.130, which requires two-way communication before entry (Correct answer)
- No violation if the pilot squawks 1200
- A violation only if weather is below VFR minimums
Correct answer: A deviation from FAR 91.130, which requires two-way communication before entry
FAR 91.130 requires pilots to establish two-way radio communication with the ATC facility providing Class C services before entering that airspace.
Question 7: What is the floor of Class A airspace in the contiguous United States?
- 12,500 feet MSL
- 14,500 feet MSL
- 18,000 feet MSL (Correct answer)
- 24,000 feet MSL
Correct answer: 18,000 feet MSL
Class A airspace exists from 18,000 feet MSL up to and including FL600 throughout the contiguous US, Alaska, and over the domestic waters.
CTO Airspace Structure & Regulations 3
Class C airspace typically extends from the surface to what altitude above the primary airport?