As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MDIS 523 24-22 9479 09DEC21 MEM OPEN U DURING MX PRE-FLIGHT GOT AN EMER LT BAT 1 LO ALERT WHEN PERFORMING EMER LT TEST. NO TEST FAIL DISPLAYED MEL 09DEC21 04:52 MEM U RELEASED FOR SERVICE PER MEL : 33-50-04 CATEGORY : C EXPIRATION : 19DEC21 "MEL 33-50-04: EMER LIGHTS - INOP." FACT 11DEC21 15:52 EWR PER FIM 33-51-00-2 AND AMM 33-51-01-5. EMERGENCY LIGHT BATTERY PACK , OPS CHECK GOOD.