Incident Overview
Ground personnel serviced the forward lavatory shortly before flight. A flight attendant reported that fluid was visible in the upper toilet area of the forward lavatory after servicing, indicating that the lavatory had been overfilled.
In-Flight Engine Failure
En route, the number 3 engine failed and was subsequently shut down. The flight diverted to Miami.
Post-Flight Findings
Upon arrival, a blue streak was observed on the right side of the aircraft. It began at the forward lavatory service door and ended at the inlet of the number 3 engine. The forward lavatory service door was found closed, but when opened, the fill/rinse line cap was missing. The fill/rinse line check valve was found stuck open. When a cap was installed on the line, no leakage occurred. The lavatory drain line did not leak.
Engine Damage
The number 3 engine had sustained fan damage due to ingestion of soft matter.