As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT CEILING EMERGENCY LIGHTS FROM 37EF AFT INOP. SEAT TRACK LIGHTS INOP AFT CABIN RIGHT SIDE ROW 25 EF TO 45EF. REPLACED CHARGER AND BATTERY MODULE NR M737. OPS NORMAL. BATTERY VOLTAGE LOW. REPLACED BATTERY PACK AT M732. OPS CHECKED NORMAL. PART BORROWED FROM NW.