Definition
A distribution bar in a multi-engine turboprop airplane's electrical system that receives power directly from the right engine's generator and feeds the electrical equipment assigned to that side of the aircraft. It is one of two primary generator buses (left and right), each normally powered by its own engine-driven generator, and is typically tied through a bus tie system so either generator can power both buses if one fails.
Plain English
A power rail inside the airplane that gets its electricity from the generator on the right engine and supplies the equipment connected to it. If the right generator quits, the left one can usually take over the right side's load.
Context Anchor
Seen in turboprop electrical system diagrams, cockpit electrical indications, and abnormal checklists for generator or bus failures.
Derivation
A 'bus' in electrical terms is short for 'busbar', from the Latin 'omnibus' meaning 'for all' -- a single conductor that serves many connected items. So 'right generator bus' is the shared power bar fed by the right generator that serves all the equipment connected to it.
Why Pilots Care
Proper understanding ensures correct load management and isolation procedures during generator failures or bus faults.
Analogy
Think of it like one section of a home electrical panel. Power comes into that section, then goes out to several items that need electricity.
Intuition Check
Do not picture a passenger bus. In this context, a bus is a shared electrical path that distributes power. “Right” means the airplane’s right side from the pilot’s forward-facing view, not the right side as seen from outside facing the nose.
Example Sentence 1
After the right generator failed, the bus tie closed automatically and the left generator began powering both the left and right generator buses.
Example Sentence 2
During a right generator failure, the crew transferred essential loads away from the right generator bus to maintain aircraft power.