As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG SMELL OF OIL COMING FROM THE OVERHEAD VENTS. WE RAN THE APU FOR 45 MINUTES WITH NO CHANGE. REPEAT WRITEUP. REMOVED APU DUE TO INTERNAL OIL LEAK AND REPLACED WITH AN INSPECTED APU. PERFORMED SYSTEM OPERATION AND LEAK CHECK, NO DEFECTS NOTED. SYSTEM LEAKS AND OPERATIONAL CHECKS ARE GOOD. WORK PERFORMED IAW AMM 45-10-00. THE TIME REMOVED APU (SN- P-327) AT REMOVAL IS 3563.0.