What was found
EN-ROUTE RT WINDOW HEAT CONTROLLER REQUIRES REPLACEMENT DUE TO ARCING WINDSHIELD. R&R WINDOW HEAT CONTROLLER. VENDOR SHOP FINDINGS, FAILURE WAS NOT RELATED TO REJECTION. FOUND EXTERNAL COVER DAMAGED & INTERNAL FOD. THE EJECTORS & LOCK PINS ON A1, A2, A3 & CCA'S WERE INTERNALLY DAMAGED WHICH WERE CAUSING THE FOD. UNIT FAILED INCOMING FUNCTION TEST INTERMITTENT ON BITE TEST. FAULT CONTROL UNIT REQUIRES REPAIR & RE-CALIBRATION. REPLACED CHASSIS S1 & S2 SWITCHES & EJECTORS A1 CCA, A2 CCA, A3 CCA & A4 CCA. REPAIRED THREE GND LUG TERMINALS WHICH WERE FOUND LOOSE & CLEANED OUT DUST, FOD, FROM INSIDE UNIT. EXTERNAL COVER WAS REPAIRED. THE CONTROLLER WAS RE-CALIBRATED & PASSED THE FINAL TEST.