What was found
AFTER TURNING ON THE NR 4 CTC, THE AIRCRAFT FILLED WITH A BURNING OIL SMELL. TURNED NR 4 CTC OFF AND SMELL DISSIPATED. NOTE: DID NOT GET AN OVERHEAT LIGHT, RPM'S NORMAL. FOUND NR 4 CTC FAN BLADE DAMAGED. REMOVED AND REPLACED NR 4 CTC. OPS CHECKED GOOD IAW DC-8 MM CHAPTER 21. ADDITIONAL INFO: THE CREW HAD THE PROBLEM WITH THE NR 4 CTC ON TAKEOFF OUT OF ILN EN ROUTE TO SAT, FLIGHT 392. DID NOT DO AN AIR TURNBACK, NOR ABORT TAKEOFF. MAINTENANCE ALSO FOUND THE NR 3 CTCS DAMAGED. BOTH THE NR 3 AND NR 4 CTCS WERE CHANGED OUT. A BIRD STRIKE INSPECTION WAS ALSO PERFORMED WITH NO ADDITIONAL FINDINGS.