What was found
NR 3 ENGINE FLAMED OUT ON APPROACH AT 6000 FEET. AT LEVEL OFF 6000 FEET DURING FINAL APPROACH SEGMENT NR 3 INSTRUMENTS INDICATED THE FOLLOWING FUEL FLOW 0 / 35 PERCENT N2 / EPR0 / N1 ZERO / NORMAL OIL PRESS, NORMAL OIL TEMP / THROTTLE MOVEMENT, NO EFFECT / NR 3 GEN LIGHT CAME ON APPROXIMENTLY 3-5 MINUTES AFTER INDICATIONS. TROUBLESHOT PER M/M, FOUND BAD O-RING ON FUEL CONTROL CONDENSATION TRAP BOWL. PERFORMED ENGINE RUN PER PREFLIGHT HANDBOOK, CHECKS OUT GOOD.