People can work in one or several of the following fields:

• Doing RTD for aviation (2A)
• Managing programs (2B)
• Selling or studying the market (2B)
• Designing aviation systems or subsystems (2C)
• Manufacturing and testing aviation elements (2D)
• Assuring the quality (2E)
• Integrating and validating aviation elements into systems (2F)
• Doing Flight Testing (2G)
• Running certification & airworthiness activities (2H)
• Doing maintenance, repair and overhaul of aviation systems (2I)
• Doing air traffic management(2J)
• Doing airport management(2K)
• Providing air transportation services (2L)
• Doing general management & administration (2M)