As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYS - RT FWD WINDOW HEAT INOPERATIVE. BITE CHECKED WINDOW HEAT CONTROL UNIT, (RT FWD), FAULTED CONTROL UNIT. R & R WINDOW HEAT CONTROL UNIT IAW AMM 30-41-01. BITE CHECK, FAULTED CONTROL UNIT. SWAPPED RT FWD & LT SIDE CONTROL UNIT W/LT FWD & RT SIDE CONTROL UNIT, TESTED OK.