What was found
AT CRUISE, L1 DOOR AUDIBLE SLIDE WARNING. CONFIRMED HANDLE IN FULLY DOWN POSITION AND ATTEMPTED TO REARM, BUT WARNING HORN PERSISTED. WHILE T/S REF TSM 52-73-00, FOUND ASPSU BATTERY #2 WITH RED FAULT LIGHT. REMOVED AND REPLACED BATTERY REF AMM 52-73-18-04. TEST REF AMM 52-73-00-05-01 TEST GOOD AND A/C IS OK FOR SERVICE. REMOVED BATTERY PACK