What happens to gyro instruments if there are no flags visible?

When gyro instruments show no flags, it indicates they are operating properly. Flags on instrumentation are typically warning indicators that alert the pilot to a malfunction or an abnormal condition. If no flags are visible, it means that the instruments are within their normal operational parameters. This visual confirmation provides pilots with confidence in the reliability of the readings being presented, which are critical for navigation and control during flight.

Other possibilities, such as the instruments being considered unreliable or potentially failing soon, would only apply if flags were present. Similarly, the notion that the instruments would shut down automatically is not accurate, as gyro instruments are designed to remain operational unless there is an indicated issue. Thus, the absence of flags is a clear sign of their proper functioning.