Air traffic controllers need knowledge in the following areas:

• Transportation: The methods and costs for moving people, goods, and materials.
• English Language: The meaning and use of the English language.
• Public Safety and Security: How to protect people and property.
• Education and Training: The methods of teaching and learning.
• Customer and Personal Service: Providing special services to customers based on their needs.
• Geography: How to describe the location, features, and relationships of land, sea, and air.
• Telecommunications: The tools used to send messages and data.
• Mathematics: The rules and uses of numbers.