Which statement describes how altitude information is used by the MC1?

Which statement describes how altitude information is used by the MC1?

• A. It is not used by any other system.
• B. It is only stored for logging.
• C. It is used only for warning when landing.
• D. Altitude information is displayed, used for low altitude voice warning, and routed to other avionic systems.

Answer: (D)

Altitude data from the MC1 is a shared, actively used stream throughout the avionics, not just a passive record. It feeds the primary altitude display so the pilot can see current height, triggers low-altitude voice warnings when you approach unsafe levels, and is routed to other avionic systems so they can react appropriately—think autopilot vertical mode, terrain awareness, and approach guidance. This holistic use makes altitude information essential across multiple functions, not limited to logging or to warnings only during landing.

Altitude data from the MC1 is a shared, actively used stream throughout the avionics, not just a passive record. It feeds the primary altitude display so the pilot can see current height, triggers low-altitude voice warnings when you approach unsafe levels, and is routed to other avionic systems so they can react appropriately—think autopilot vertical mode, terrain awareness, and approach guidance. This holistic use makes altitude information essential across multiple functions, not limited to logging or to warnings only during landing.