FAA Ground School Practice Test

Which UNICOM frequencies are typically assigned to helicopter landing areas?

1. 121.9 and 123.5 MHz

2. 123.05 and 123.075 MHz

3. 126.9 and 127.0 MHz

4. 121.5 and 122.75 MHz

The correct answer is: 123.05 and 123.075 MHz

Helicopter landing areas commonly use specific UNICOM frequencies for communications, particularly to ensure that all aircraft operating in the vicinity can coordinate their activities effectively. The frequencies 123.05 and 123.075 MHz are often designated for such operations, as they allow for communication between helicopters and ground personnel and between different aircraft. These frequencies are chosen for their ease of use and accessibility. They are generally in the VHF range that is suitable for air-to-ground and air-to-air communications, making them practical for helicopter operations which often require precise coordination in confined areas like landing zones or heliports. These frequencies are utilized to announce landing or departure intentions, ensuring safe operations in busy or challenging environments. Other frequency options listed are typically associated with different communication purposes: for example, 121.9 MHz is a notable frequency for flight service stations and air traffic control communications, while 121.5 MHz is primarily an emergency frequency, not designed for routine operations. Therefore, it's important for pilots and ground crews to use the designated frequencies to help maintain situational awareness and safety during helicopter operations.