What was found
DURING A CREW TRAINING SESSION THE DIRECTOR OF OPS FOUND 3 CIRCUT BREAKERS ON WINDOW HEAT TEST PANEL BEHIND THE CO-PILOT (SUB PANEL B)POPPED AND UPON FURTHER INVESTIGATION, FOUND ALL 3 CIRCUT BREAKERS HAD OVERHEATED AND MELTED THE PLASTIC EXTERNAL COVERS AND RENDERING THEM UNSERVICEABLE. ALL 3 BREAKERS (PN:PP11-49-10.0A) WERE REMOVED AND REPLACED WITH 3 NEW CIRCUT BREAKERS. GROUND SYSTEMS CHECK IAW THE MM CHECKED GOOD. ALL WIRING AND TERMINAL ENDS WERE INSPECTED FOR ANY SIGNS OF HEAT DAMAGE OR MELTING. NO OTHER DEFECTS WERE FOUND AT THIS TIME.( SEE ATTACHED PHOTOS). HAVE CONTACTED TECH SUPPORT, AND THEY HAVE A TASK IN THE E-6 (12 MONTH) AND THE F-6 (24 MONTH). WE HAVE ALSO ADDED A STAND ALONE TASK CARD TO FLIGHT DOCS TO INSPECT THESE CIRCUT BREAKERS ON A 12 MONTH INTERVAL. (SEE ATTACHED TASK CARD). IF WE HAVE ANY FURTHER ISSUES, WE WILL RE-EVALUATE AND IF NEED BE SHORTEN THE INSPECTION INTERVAL.