Radiotelephony

Radiotelephony is voice communication by radio between aircraft and ground stations using standard aviation words, call signs and message order. It is used during taxi, take-off, en-route flight, arrival and in emergencies so that messages are understood quickly and correctly. As a pilot, you listen before transmitting, use the correct frequency and call sign, and keep your messages short, clear and standard. You also read back clearances and instructions that require confirmation, especially runway, altitude, heading and squawk assignments.