What was found
FLT 391, EMERGENCY LIGHT TEST FAILED AFT EPSU BATTERY. R & R EMERGENCY LIGHT BATTERY AFT 13WL IAW AMM 33-51-38
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLT 391, EMERGENCY LIGHT TEST FAILED AFT EPSU BATTERY. R & R EMERGENCY LIGHT BATTERY AFT 13WL IAW AMM 33-51-38