This category covers 23 topics and has 96 questions.

• Proword Meanings
• Proword Usage
• Initial Call
• Radio Check
• Frequency Spacing
• Broadcast Calls
• Over/Out
• Lost
• Hold Short
• Not Able
• Missed Approach
• Climb/Descend
• Relaying
• Need Frequency Change
• Contact
• Standby
• Monitor
• Change of Callsign
• Take-off
• Rejected Take-off
• Change to Turn
• End of Vectoring
• "Reaching"