Air Traffic Controller (ATCo): Air Traffic Controllers are a professional group responsible for managing all stages of an aircraft's flight from one point to another, primarily ensuring safety. In other words, they ensure the safe, orderly, and expeditious flow of air traffic in the air and at airports.

Air Traffic Controllers communicate advice, information, and instructions to pilots via radio, working with numerous support units and taking advantage of technological innovations. They provide air traffic control services to dozens of aircraft in their control area simultaneously, ensuring safe and orderly flights and timely takeoffs and landings.

The duties of air traffic controllers vary depending on whether they work as area, approach, or aerodrome controllers, but their main tasks include:

• Maintaining radio and/or radar contact with aircraft.
• Directing the movement of aircraft along airways or at airports.
• Issuing instructions for aircraft to climb or descend and assigning final cruising levels.
• Providing aircraft with weather information.
• Ensuring minimum separation distances between aircraft.
• Managing unexpected situations, emergencies, and non-scheduled traffic.
• Controlling movements to and from the runway.
• Directing ground movements of aircraft around the terminal.
• Managing ground movements of vehicles around the airport.

Pilot: A pilot is a person who operates and controls an aircraft, either as a hobby, privately, or professionally. Before obtaining pilot licenses for commercial or private purposes, individuals must obtain Health Certificates appropriate to their class. In Turkey, the health standards for flight personnel are determined by the Aviation Health Instruction (SHT-MED) and ICAO (International Civil Aviation Organization) Annex 1.

Cabin Crew Member: A cabin crew member, also referred to as a “flight attendant” or “cabin attendant,” is responsible for implementing necessary safety and security measures and ensuring passenger comfort on aircraft engaged in passenger transport. According to the Aviation Health Instruction (SHT-MED) and the Aviation Examinations, Health Certificates, and Health Examination Report Procedures – Appendix 1 circular, they are required to undergo medical examinations at Authorized Aviation Medical Centers before starting employment and every five years thereafter.