As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SERVICE CHECK EMERGENCY LIGHTS TEST FAILED R/I 06OCT24 09:00 MEM REASON CODE : PREMATURE REMOVAL/INSTALLATION OFF MPN: AD-3214-31 POS: 3 SRL: 243581 ON MPN: AD-3214-31 CPN: 3310373 SRL: 243726 TAG NBR: 0914I6 FACT 06OCT24 09:00 MEM AMM: 33-51-14-04 REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT BATTERY REF ABOVE. OPS CHECK GOOD. OK FOR SERVICE. SDR INFO: EMERGENCY POWER SUPPLY BATTERY, AERO DESIGN INC., PN: AD-3214-31, SN: 243581