As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON CLIMBOUT,THE FLIGHT CREW NOTICED PUFFS AND STREAMS OF WHITE SMOKE COMING FROM NR 1 ENGINE. THE PILOT IMMEDIATELY RETURNED TO THE BASE AND CONTACTED MX. INSPECTED AND FOUND THE OIL DRAIN LINE IN THE AFT OF THE NR 1 ENGINE COMPARTMENT WAS CRACKED ALLOWING OIL TO BE VENTED THROUGH THE EXHAUST CAUSING WHITE SMOKE. HE REPLACED THE DRAIN LINE, AND PERFORMED A FLIGHT TEST. NO OTHER DESCREPANCIES NOTED.