How are normal system indications verified on the ECS?

The verification of normal system indications on the Environmental Control System (ECS) is established by ensuring that all systems are operational and indicated with a green light. This means that the systems are functioning as intended and are within their normal operational parameters. A green-lighted indication signals to the operator that there are no issues that require attention, confirming that everything is running smoothly.

In contrast, other approaches such as generating alerts for issues or performing manual system checks may indicate problems rather than confirm normal operations. Random testing of operational systems might provide some insights, but it does not guarantee that all aspects of the ECS are functioning correctly at all times. Therefore, confirming that all systems are operational and shown as green-lighted represents the most reliable method for verifying normal system indications.