What was found
THE COMPLAINANT NOTED SMOKE IN THE COCKPIT.THE SOURCE OF THE SMOKE WAS THE FAILURE OF A FILTER CAPACITOR, C20 (P/N 1131013-106035,) ON THE POWER SUPPLY BOARD (P/N 71115-05.) IT HAD BURNED OUT CAUSING THE SMOKE. IT IS A FILTER CAPACITOR FOR THE -15V SIDE OF THE DC TO DC CONVERTER. THE PART WAS INSTALLED CORRECTLY (POLARITY), AND NONE OF THE SURROUNDING DEVICES WERE ABNORMAL. IT WAS A PART THAT HAS HISTORICALLY GIVEN US THIS TYPE OF FAILURE, ALTHOUGH WE’VE NEVER HAD ISSUE WITH THE PART LOCATED HERE. IT APPEARS TO BE A ONE TIME DEFECTIVE DEVICE.