As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MDIS 682 33-50 0405 22DEC21 GSP FACT U EMERGENCY EXIT LIGHT POWER SUPPLY BATTERY IS DEAD. R/I 22DEC21 01:03 GSP U REASON CODE : PREMATURE REMOVAL/INSTALLATION OFF MPN: AD-3214-31 POS: 3 SRL: 278291 TAG NBR: 51G876 ON MPN: AD-3214-31 CPN: 3310373 SRL: 256497 TAG NBR: 4I8607 FACT 22DEC21 01:03 GSP U REMOVED AND REPLACED EMERGENCY POWER SUPPLY BATTERY IAW A300-600 AMM REF#33-51-14-04. OK FOR SERVICE.