What was found
DURING EMERG LIGHT TEST FAULTED LT & RT AFT EPSU. REPLACED LT & RT AFT EPSU BATTERY PACKS, TEST OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING EMERG LIGHT TEST FAULTED LT & RT AFT EPSU. REPLACED LT & RT AFT EPSU BATTERY PACKS, TEST OK.