As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L1 WINDOW (CAPTAIN FORWARD WINDOW) HEAT HAD ELECTRICAL ARCING AND BURNING SMELL WITH BRIGHT ARCING ILLUMINATION; ARCING AND SMELL STOPPED ONCE POWER REMOVED FROM WINDOW HEAT. / [01] INSPECTED WINDOW PER AMM 56-11-00. NO CRACKS/DELAMINATION NOTED. OK TO CONTINUE PER MEL 30-11-01 SP1 AUTH #68787;[02] R/R L/H NO 1 WINDOW PER M/M 56-11-11 AND L1 WINDOW HEAT CONTROL UNIT PER M/M 30-41-11