What does UNICOM stand for?

• A. United Communications
• B. Universal Communications
• C. Universal Communications and Telemetry
• D. Unified Communications

Answer: (B)

UNICOM is a shared radio channel used at airports without a control tower to coordinate traffic and provide information. It stands for Universal Communications, reflecting that this single frequency is an openly accessible path for pilots and ground personnel to communicate. The idea behind this term is that any user can use the channel, not a specific entity with its own dedicated line. This is different from options that imply a specific organization or an additional feature like telemetry. In practice, pilots announce intentions, positions, and requests on the UNICOM/CTAF frequency at non-towered fields to ensure safe and orderly operations.