What was found
DURING CRUISE, HAD INDICATION OF FAULT ON NR 4 ENGINE FAULT GAUGE. NEEDLE BOUNCING BETWEEN 6 AND 8 WITH FLASHING FAULT LIGHT/FIRE DETECTION LIGHT. FAULT LIGHT CAME ON STEADY. THEN PERFORMED COM 2.26.32. THEN SMELLED ODOR OF BURNING INSULATION AND/OR ELECTRICAL FLAMES. S/O OBSERVED ODOR/FLAMES WITHIN THE P-6 C/B PANEL UPPER PORTION BEHIND FIRE DETECTION CONTROL PANEL. AT THAT POINT, PERFORMED ELECTRICAL FIRE OR SMOKE RED BORDERED CHECKLIST AND INITIATED EMERGENCY DESCENT, DECLARED EMERGENCY. ENGINE FIRE DETECTION 3A-4A C/B OPENED POPPED. CONTINUED COM 2.26.6. FLAMES STILL IN VIEW AND INCREASING IN INTENSITY. AT THE POINT OF TRIPPING GB’S FOR THE NR 1 AND NR 2 GENERATORS, THE FLAMES DIMINISHED AND EVENTUAL