What was found
DURING NON ROUTINE CHECK, FOUND EMERGENCY LIGHT TEST FAILED, BATTERY AT AFT LEFT. REPLACED BATTERY PACK AND FUNCTIONAL CHECKED NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING NON ROUTINE CHECK, FOUND EMERGENCY LIGHT TEST FAILED, BATTERY AT AFT LEFT. REPLACED BATTERY PACK AND FUNCTIONAL CHECKED NORMAL.