What was found
EWR - AFTER AN OVERNIGHT SERVICE, AIRCRAFT WAS TAXIING FROM HARD STAND TO GATE, SMOKE WAS COMING FROM LEFT AFT LAV. FOUND AFT LAV FLUSH MOTOR EMITTING SMOKE. REPLACED LAV FLUSH MOTOR, TIMER AND CIRCUIT BREAKER. TIMER, PN 2123M100, BREAKER, PN BACC18W5. (X)