What was found
EMERGENCY LIGHT TEST DISPLAYED MESSAGE *33-51-38 EPSU BATTERY AFT L*. REPLACED BATTERY PACK AT EPSU AFT LEFT, OPS TEST GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
EMERGENCY LIGHT TEST DISPLAYED MESSAGE *33-51-38 EPSU BATTERY AFT L*. REPLACED BATTERY PACK AT EPSU AFT LEFT, OPS TEST GOOD.