Aerodrome control

Concise and unambiguous phraseology used at the correct time is vital to smooth, safe and expeditious operation of an aerodrome.

Controllers should not transmit to an aircraft during take-off, initial climb, the last part of final approach or the landing roll, UNLESS NECESSARY for SAFETY REASONS. It may indeed be distracting to the pilot at a time when the cockpit workload is at its highest.