As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN CREW REPORTS DIRTY, MUSTY ODOR IN CABIN DURING CLIMB AND DESCENT. FOUND OIL LEAKING FROM DE-OILER VENT PIPE ON NR 1 ENGINE. R & R THE GEARBOX BREATHER OUTLET DUCT SEAL IAW AMM 72-60-31-400-010-A. RAN ENG. NO LEAKS NOTED. LEAK CHECKED GOOD. THE AIRCRAFT WAS GROUNDED.