What was found
IAD/JAX - FLT 6753 - DURING TAKEOFF AT 1850 HRS ON 1-2-99, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO LAV SMOKE DETECTOR WARNING LIGHT ILLUMINATED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED COALESCER BAGS AND LAV SMOKE DETECTOR. OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. REF: OPERATOR CONTROL NR 99ZZZX____. (X)