What was found
AT FLT 360, RECEIVED CABIN SMOKE LEVEL 3 ALERT. ALERT WAS INTERMITTENT ON & OFF. ELECTED TO DIVERT TO KTUL ALERT WENT OUT DURING DESCENT. CREW REPORTED THERE WAS NO SMOKE PRESENT ONLY INTERMITTENT INDICATION ON OVERHEAD PANEL & EAD. PERFORMED SMOKE DETECTOR ADJUSTMENT TEST IAW AMM 26-14-01-5, NO FAULTS FOUND. PERFORMED THE MISCELLANEOUS SYSTEMS CONTROLLER ADJUSTMENT/TEST IAW AMM 31-42-01-5, NO HISTORY, NO CURRENT FAULTS AND RTS WAS GOOD. PERFORMED SMOKE DETECTOR ADJUST TEST IAW AMM 26-14-01-5, NO FAULTS FOUND. REMOVED AND REPLACED MSC IAW MM 31-42-01-4. PERFORMED RETURN TO SERVICE TEST IAW MM 31-42-01-4. TEST PASSED. R & R COALESCER WATER SEPARATOR BAGS IAW MM 21-54-05-2. R & R 18 MAIN CARGO SMOKE DETECTORS IAW MM 26-14-01-4. PERFORMED OPS TEST IAW MM 26-14-01-5. TESTED NORMAL. A/C OK FOR SERVICE.