Aviation Communication Codes

noun a system of sending messages by holding the arms or two flags or poles in certain positions according to an alphabetic code

verb to send a message using a semaphore system

• The naval officer used semaphore flags to communicate with the nearby ship.
• We can use semaphore signals to coordinate our movements during the hike.
• Let's semaphore each other when we're ready to leave the party.
• Her raised eyebrows were a semaphore of her disapproval.

noun a common noun that refers to a specific place or location

• The pilot radioed in his position using the phonetic alphabet, stating 'Charlie Gulf'.
• I heard the pilot say 'Charlie Gulf' over the radio, I wonder what it means.
• The air traffic controller told the pilot to head towards 'Charlie Gulf' for a smooth landing.
• In the military operation, 'Charlie Gulf' was the code name for the final phase of the mission.