As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ON FLIGHT 3098, AN OIL ODOR WAS NOTED IN THE COCKPIT. THE ODOR IS IN THE COCKPIT ONLY. THE ODOR IS ASSOCIATED WITH THE AIR CONDITION SYSTEM AND THE NR 1 PACK. MAINTENANCE PERFORMED AN ENGINE RUN AND NOTED THERE IS AN OILY ODOR WHEN THE NR 1 PACK IS ON. THE NR 1 ENGINE ALSO HAS A LOW OIL PRESSURE INDICATION. FURTHER INSPECTION REVEALED OIL LEAKING AND POOLING IN THE COMPRESSOR SECTION. REMOVED AND REPLACED THE NR 1 ENGINE IAW MFG JOB CARD CE720001. OPS CHECK AND LEAKS CHECKS GOOD WITH NO ODOR NOTED.