What was found
EMERGENCY LIGHT TEST FAILS, SAYS EPSU UNIT AFT LEFT, RESET NO HELP. EPSU UNIT FAULT LIGHT DISPLAYED. REPLACED EPSU AND BATTERY ASSY.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
EMERGENCY LIGHT TEST FAILS, SAYS EPSU UNIT AFT LEFT, RESET NO HELP. EPSU UNIT FAULT LIGHT DISPLAYED. REPLACED EPSU AND BATTERY ASSY.