As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - EEL - DURING 4 DAY CHECK, FOUND THE EPSU AND BATTERY LEFT SIDE OVER WING EXIT FAILED OPERATIONAL CHECK. MAINTENANCE REMOVED AND REPLACED THE LEFT OVERWING EPSU IAW AMERICA WEST AIRLINES TASK CARD R1C33303. OPERATIONAL CHECKS WERE GOOD.