What is employed in order to minimize the impact of intermittent faults on operator activity, particularly during higher alert states?

• A. A non-switchable filter of CRT fault alerts
• B. Automatic fault suppression across all displays
• C. Manual acknowledgement of faults only
• D. A switchable filter of CRT fault alerts

Answer: (D)

Minimizing distraction from intermittent faults during high-alert states comes from giving the operator control over fault visibility. Intermittent faults can trigger repeated CRT fault alerts, cluttering displays and increasing workload at a time when attention is scarce. A switchable filter lets you enable alert filtering during high-alert conditions, suppressing non-critical or transient fault messages so you can focus on what's essential. When conditions allow, you can switch the filter off to reveal all faults for full awareness or diagnostics. This balances safety and workload better than filters that are always on, automatic suppression across all displays, or relying on manual acknowledgement alone.