If one of the DCU disable switch lights is pressed, all voice messages will be inhibited except for __ and __ warnings

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Multiple Choice

If one of the DCU disable switch lights is pressed, all voice messages will be inhibited except for __ and __ warnings

Explanation:
When the DCU disable switch is used, most voice alerts are muted to reduce cockpit chatter, but two safety-critical warnings remain audible: EGPWS and TCAS. EGPWS provides terrain proximity warnings, and TCAS warns about nearby aircraft conflicts. These alerts are prioritized and designed to break through suppression so the crew can take timely action in dangerous situations. Other types of warnings, such as engine-related alerts or general cautions, aren’t required to override suppression, so they can be silenced along with other non-critical messages.

When the DCU disable switch is used, most voice alerts are muted to reduce cockpit chatter, but two safety-critical warnings remain audible: EGPWS and TCAS. EGPWS provides terrain proximity warnings, and TCAS warns about nearby aircraft conflicts. These alerts are prioritized and designed to break through suppression so the crew can take timely action in dangerous situations. Other types of warnings, such as engine-related alerts or general cautions, aren’t required to override suppression, so they can be silenced along with other non-critical messages.

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