As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING OVERNIGHT INSPECTION DISCOVERED THE LT OVERWING EMERGENCY POWER SUPPLY INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE LT CABIN EPSU AND BATTERY IAW AMERICA WEST AIRLINES TASK CARD R1C333034. OPERATIONAL CHECKS WERE GOOD. VENDOR COULD NOT CONFIRM FAILURE. THE UNIT WAS CLEANED AND SIL 3214-33-05/02 PERFORMED, SELF ADHESIVE STRIPS. INSPECTED AND TESTED IAW CMM 33-51-12 REV.3.