What was found
FLIGHT 6047, CMH TO JFK. ON CLIMBOUT BETWEEN 500 TO 1,000 FT A BURNING ODOR THAT SMELLED LIKE OIL WAS NOTICED IN THE COCKPIT WITH NO ASSOCIATED WARNINGS. THE FLIGHT ATTENDANT REPORTED MOMENTS LATER A BURNING ODOR AND SLIGHT HAZE IN THE CABIN. THE FLIGHT CREW DONNED O2 MASKS AND COMPLETED THE QRH CHECKLISTS AND RETURNED TO CMH. WHILE RETURNING TO CMH THE HAZE DISSIPATED ALONG WITH THE ODOR. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND E2 TO BE LEAKING OIL FROM AROUND THE TOWER SHAFT INTO THE BYPASS AREA OF THE ENGINE. E2 WAS REPLACED WITH NO FURTHER DEFECTS NOTED.