As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CA WINDOW STARTED ARCING AROUND 16K FT FOLLOWED BY WINDOW HEAT CAUTION MSG. THERE WAS NO SMOKE OR ODOR, ONLY ARCING AND LASTED NO MORE THAN 10 MINUTES AND NO MEDICAL ATTENTION WAS REQUIRED. / REMOVED AND REPLACED CA SIDE WINDOW IAW AMM 56-12-01-400-801-A01-PSA. PERFORMED LEAK CHECK IAW 56-12-01-400-801-A01-PSA. LEAK CHECKS GOOD.