At a towered airport, pilots must contact the control tower and maintain two-way communication approximately how many nautical miles out from the airport?

At a towered airport, pilots must contact the control tower and maintain two-way communication approximately how many nautical miles out from the airport?

• A. 5 NM
• B. 10 NM
• C. 15 NM
• D. 20 NM

Answer: (C)

When approaching a towered airport, you must have two-way radio communication with the control tower before you enter the controlled airspace around the airport. The practical rule pilots are taught is to contact the tower when you’re about fifteen nautical miles away. This gives ATC enough lead time to recognize your aircraft, provide traffic advisories, and start coordinating your sequencing as you move toward the airport’s approach or traffic pattern. The distance is a useful guideline because it balances timely ATC coordination with not requiring you to contact too early. Of course, the exact distance can vary by airport and conditions, but fifteen nautical miles is the standard target used in training. Five nautical miles is typically too close to allow proper sequencing before you’re within the Class D airspace, ten miles is earlier than usual for many procedures, and twenty miles is farther out than necessary for standard tower operations.

When approaching a towered airport, you must have two-way radio communication with the control tower before you enter the controlled airspace around the airport. The practical rule pilots are taught is to contact the tower when you’re about fifteen nautical miles away. This gives ATC enough lead time to recognize your aircraft, provide traffic advisories, and start coordinating your sequencing as you move toward the airport’s approach or traffic pattern. The distance is a useful guideline because it balances timely ATC coordination with not requiring you to contact too early. Of course, the exact distance can vary by airport and conditions, but fifteen nautical miles is the standard target used in training. Five nautical miles is typically too close to allow proper sequencing before you’re within the Class D airspace, ten miles is earlier than usual for many procedures, and twenty miles is farther out than necessary for standard tower operations.