What was found
BATT DISCHARGE LIGHT IMAGE OF CURRENTLY INSTALLED APU START POWER UNIT. ADDITIONAL IMAGES ADDED. UNIT, APU START OFF 29-4941-9-0002 8135 ON 0000 UNIT, APU START OFF 29-4941-9-0002 8135 ON 29-4941-9-0002 8262 REMOVED AND REPLACED APU START POWER UNIT. PERFORMED INSTALLATION TEST, NO RELATED FAULTS OR MESSAGES PRESENT AT THIS TIME, INSTALLATION TEST PASS. REF AMM 49-41-71 PARTS USED: 29-4941-9-0002,QTY :1 PARTS USED: 29-4941-9-0002,QTY :1 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1362619 SN OFF 8135