What item is on the DC emergency bus?

What item is on the DC emergency bus?

• A. APU Battery Bus Direct Feed
• B. FIDEX A/B extinguisher, NOT detection
• C. Fuel SOV L/R engine & APU
• D. Hydraulic SOV L/R engine

Answer: (A)

Emergency electrical power and the DC emergency bus are set up to keep essential systems alive when normal power is lost. The DC emergency bus is fed by a dedicated power source, specifically a direct feed from the APU battery bus, so it stays energized even if the main generators aren’t available. This ensures critical flight and cockpit systems have power long enough to manage the situation and land safely. The other items are related to fire extinguishing or fuel/hydraulic control valves, not to powering the DC emergency bus, so they don’t apply to this question.

Emergency electrical power and the DC emergency bus are set up to keep essential systems alive when normal power is lost. The DC emergency bus is fed by a dedicated power source, specifically a direct feed from the APU battery bus, so it stays energized even if the main generators aren’t available. This ensures critical flight and cockpit systems have power long enough to manage the situation and land safely. The other items are related to fire extinguishing or fuel/hydraulic control valves, not to powering the DC emergency bus, so they don’t apply to this question.