Which statement best describes when a Turn Coordinator displays roll information?

• A. During the start of a turn
• B. After the turn is established
• C. Only yaw is shown
• D. Only during straight-and-level flight

Answer: (A)

Turn Coordinator is mounted at an angle so it senses both roll and yaw. When you begin a roll into a turn, the gyro detects that roll rate and the miniature airplane on the display tilts to show that you’re entering a turn. Once the roll is complete and a steady turn is established, the gyro predominantly senses yaw (turn rate) rather than roll, so the instrument switches focus to indicating how fast you’re turning. Therefore, the roll information is shown at the start of the turn. It won’t display roll information during straight-and-level flight, and after the turn is established it emphasizes turn rate instead.