Incident Overview
While taxiing back to the gate, the number one engine fire warning light illuminated for the flight crew. This occurred after the number one generator fault light had previously illuminated while the aircraft was holding short for departure. Smoke was observed emanating from the engine, prompting the crew to discharge both onboard fire bottles and secure the affected engine.
Evacuation
An emergency evacuation was ordered by the crew while the aircraft was on an active taxiway. Passengers and crew exited via the right aft service door. No injuries were reported during the evacuation.
Damage
The engine cowling and several accessories sustained fire damage as a result of the incident.
Cause
Investigation determined that the fire was the result of the internal failure of the generator due to failure of a generator bearing.