As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 3 SVC CHECK EMERGENCY SYSTEM TEST FAILED. MSG 33-51-38 "INT. LOADS AFT L" + "EXT. LOADS AFT L. T-S DOWN TO ROW 20ABC EGRESS LIGHTING, REMOVED BULB. OPERATION NORMAL. ALL OTHER EGRESS LIGHTING WORKING NORMALLY. REPLACED 20ABC SEAT MOUNTED EMERGENCY LIGHT ASSEMBLY. ALSO PERFORMED CABIN EMERGENCY LIGHT TEST. TESTED OKAY.