What was found
WHILE PERFORMING EMERGENCY LIGHT CHECK RECEIVED 'EPSU BATTERY LEFT' INOP, REPLACED LEFT EPSU BATTERY PACK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE PERFORMING EMERGENCY LIGHT CHECK RECEIVED 'EPSU BATTERY LEFT' INOP, REPLACED LEFT EPSU BATTERY PACK.