> When lights are normally not lit and one lights up a pilot or other machine or plant operator should take notice. The crew monitor the central EICAS display

> When lights are normally not lit and one lights up a pilot or other machine or plant operator should take notice. The crew monitor the central EICAS display for fault indications, not random locations around the cockpit. If you start bolting-on additional check locations you increase crew workload, particularly if it's not a 'dark cockpit' like an Airbus type.