EGPWS Control Panel
FAULT - SYS FAULT light illuminates amber when a GPWS malfunction is detected. All GPWS warnings are inhibited. Terrain functions are not affected.
ON - When the SYS Switch is selected ON all lights are extinguished and activates all modes of GPWS for operation.
OFF - The OFF light illuminates white when selected OFF and all GPWS warnings are inhibited. EGPWS functions are not affected.