What was found
TYR - FLT 5372 - LAVATORY SMOKE WARNING LIGHT ILLUMINATED IN FLIGHT. SMOKE WAS PRESENT IN LAVATORY. DIVERTED TO TYR. MAINTENANCE INSPECTED AND FOUND A LAMP HOLDER ASSEMBLY BURNED. DEACTIVATED LAVATORY LIGHTING SYSTEM AND OPENED MEL AGAINST LAVATORY LIGHTING AND LAVATORY. ON 4-2-99, THE LAMP HOLDER WAS REPLACED AND OPERATIONAL CHECKED IAW AMM 32-21-20 AND WORK CARD NR 2252. THE MEL ITEMS WERE RESTORED AND THE AIRCRAFT WAS RETURNED TO SERVICE. (M)