What was found
MAIN BATTERY IS DISCHARGING AFTER ENGINE START SWAPPED A/C MAIN BATTERY AND BATTERY CHARGER WITH APU BATTERY 24-31-06. APU BATTERY CHARGER CONSIDERED INOP. C/W MEL 2431D. APU BATT CHARGER DEFERRED PER MEL 2431D, M-PROCEDURE PERFORMED, AND BATTERY CHARGER PER AMM 24-31-01, 24-31-05, 24-31-02, PLACARD INSTALLED. DISPATCH DESK: 61 NAME: DAVE DATE: 19-APR-22- NOC DESK: 777 NAME: D.B DATE: 19-APR-22- SWAPPED MAIN BATT CHARGER & MAIN BATT WITH APU BATT CHARGER & APU BATT. NOW APU BATT CHARGER CONSIDER INOP. NEW POSITION OF PARTS ARE INSTALLED AS FOLLOW: MAIN BATT P/N 416541 S/N USN 090520024837B MAIN BATT CHARGER P/N 920000. S/N 09052 APU BATT P/N 263BA101-2 S/N 5274 APU BATT CHARGER P/N 263BC101-3. S/N 1740...AP;PROVED REPLACED APU BATTERY CHARGER REF AMM 24-31-06-400-801. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1239095 SN OFF 1740 CHARGER, BATTER OFF 25-2431-9-0002 1740 ON 25-2431-9-0002 1676