As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MX. EMER LIGHT TEST FAILED STEP 15 OF WEEKLY TASK CARD 26L00005005. REPLACED AFT EMER LIGHT POWER SUPPLY & BATTERY . ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK IAW AMM 33-51-38-400. SEE AALA 201603239001 FOR ADDITIONAL PART INFORMATION.