During a standard-rate turn, which instrument is primary for maintaining proper airspeed?

The airspeed indicator is essential for maintaining proper airspeed during a standard-rate turn. This instrument visually displays the aircraft's current speed relative to its stall speed and operating range, which is critical for maintaining control and ensuring safety. In a turn, if the airspeed drops too low, it can lead to an increased risk of stalling, especially when combined with changes in load factor associated with the turn.

The airspeed indicator provides real-time feedback on how the aircraft's speed is changing as it enters and maintains the turn. With a standard-rate turn, it becomes even more important to monitor airspeed because the aircraft will experience an increase in load factor, which can affect stall speed. Pilots need to ensure that their speed remains within the safe operating limits to maintain effective control of the aircraft.

In contrast, the other instruments listed serve different purposes. The attitude indicator displays the aircraft's orientation relative to the horizon, which is useful for maintaining a stable turn, but it does not provide airspeed information. The manifold pressure gauge is primarily used in piston engines to indicate engine performance rather than airspeed. The vertical speed indicator helps pilots understand the rate of climb or descent but also does not provide relevant data for airspeed management during turns. Therefore, the