What component is powered by the hot battery bus?

The hot battery bus is an essential component in an aircraft's electrical system that provides power to critical systems, even when the aircraft is not powered by the main generators. The primary function of the hot battery bus is to ensure that certain vital systems remain operational at all times, particularly in emergencies.

The emergency flaps are critical for landing and can be deployed quickly in the event of an emergency. If the aircraft experiences power loss from the generators, having the emergency flaps powered by the hot battery bus allows pilots to maintain control and execute a safe landing.

Oxygen systems, such as the Onboard Oxygen Generating System (OBOGS), are also linked to the hot battery bus. These systems are crucial for pilot and crew safety, as they provide supplemental oxygen when necessary, especially in high-altitude operations. By being powered from the hot battery bus, these systems ensure their functionality even during electrical failures.

The battery switch and emergency locator transmitter (ELT) are other components that rely on the hot battery bus. The battery switch controls the overall battery system, and ensuring its availability is vital for managing electrical power during scenarios where generators may be inoperative. The ELT is critical for search and rescue operations, as it transmits a signal if the