Chapter 7:  Radio Communication Procedures  Introduction  Understanding Proper Radio Procedures Traffic Advisory Practices at Airports without Operating  Control Towers Airport Operations without Operating Control Tower  Radio communications are an important aspect for the safe operation of aircraft in the NAS. It is  through radio communications that pilots give and receive information before, during and at the  conclusion of a flight. This information aids in the flow of aircraft in highly complex airspace areas as  well as in less populated areas. Pilots can also send and receive important safety of flight issues such as  unexpected weather conditions, and inflight emergencies. Although small UA pilots are not expected  to communicate over radio frequencies, it is important for the UA pilot to understand “aviation  language” and the different conversations they will encounter if the UA pilot is using a radio to aid  them in situational awareness when operating in the NAS. Although much of the information provided  here is geared toward manned aircraft pilots, the UA pilot needs to understand the unique way  information is exchanged in the NAS. Understanding proper radio phraseology and procedures  contribute to a pilot’s ability to operate safely and  efficiently in the airspace system. A review of the  Pilot/Controller Glossary contained in the  AIM assists a  pilot in understanding standard radio terminology. The  AIM  also contains many examples of radio communications. ICAO has adopted a phonetic alphabet that should be used  in radio communications. When communicating with ATC,  pilots should use this alphabet to identify their aircraft.  [Figure 7-1]  There is no substitute for alertness while in the vicinity  of an airport. It is essential that pilots be alert and look  for other traffic a when operating at an airport without  an operating control tower. This is of particular  importance since other aircraft may not  have  communication capability or, in some cases, pilots may  not communicate their presence or intentions when  operating into or out of such airports. To achieve the  greatest degree of safety, it is essential that all radio- equipped aircraft transmit/receive on a common  frequency and small UA pilots monitor other aircraft  identified for the purpose of airport advisories. Remote Pilot – Small Unmanned Aircraft Systems Study Guide  39