As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: BOTH PILOTS SMELLED "OIL SMELL" DURING SEVERAL PHASES OF FLIGHT. MODERATE + LIGHT IN INTENSITY. MAINTENANCE ACCOMPLISHED SMOKE ODOR FUMES INITIAL TROUBLESHOOTING IAW JOB CARD 26L00021001. DETERMINED APU IS THE CAUSE OF ODOR. SUPPLEMENTAL INFORMATION: MAINTENANCE REMOVED AND REPLACED APU IAW JOB CARD 26L31049005. OPS AND LEAK CHECK GOOD. (CLOSED)