As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3306 FO FIXED WINDOW HAS A BLACK MARK ON THE BOTTOM LEFT - DISCOLORATION. CORRECTIVE ACTION: INSPECTED WINDOW AND FOUND DISCOLORATION TO BE A BURNT SPOT ON THE BUS BAR. SIZE OF BURNT SPOT (1" X 0.5") IS WITHIN LIMITS. R/R FO FIXED WINDOW REF A330 AMM 56-11 IN ATL. (4051135)