What was found
THE EMERGENCY LIGHT SYS TEST ON PROGRAMMING AND TEST PANEL FAILS, INDICATING -EPSU BATT AFT L- FAULT. REPLACED BATTERY AT POSITION 13WL. TESTS GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
THE EMERGENCY LIGHT SYS TEST ON PROGRAMMING AND TEST PANEL FAILS, INDICATING -EPSU BATT AFT L- FAULT. REPLACED BATTERY AT POSITION 13WL. TESTS GOOD.