What indicates a loss of GYRO indication?

A loss of GYRO indication is indicated by summary alarms at the SCC (Ship Control Center) and erratic behavior of GYRO repeaters. This is because these symptoms directly point to a malfunction or failure in the GYRO system. When summary alarms are triggered, it usually means that there is an issue that requires immediate attention, often relating to the stability and accuracy of navigational data. Erratic behavior of GYRO repeaters further supports this indication, as these devices are expected to provide consistent and reliable information regarding the ship's heading. Any deviation from this expected performance suggests that the GYRO system is not functioning correctly, which could significantly impact navigation safety.

The other options do not indicate a loss of GYRO indication. For example, smooth operation of all GYRO indicators implies proper functioning rather than a failure. The mention of new GYRO technologies provides no relevance to indicating a malfunction but rather refers to advancements in the field. Lastly, regular maintenance procedures are essential for preventing issues but do not serve as a direct indicator of a current loss of GYRO indication when those indicators are monitored and functioning well.