What was found
AIRCRAFT WAS GROUNDED: DURING PS CHECK FOUND EPSU BATTERY AFT L MESSAGE. REPLACED AFT EPSU BATTERY 13WL IAW AMM 33-51-38. OPS CHECKS GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT WAS GROUNDED: DURING PS CHECK FOUND EPSU BATTERY AFT L MESSAGE. REPLACED AFT EPSU BATTERY 13WL IAW AMM 33-51-38. OPS CHECKS GOOD.