As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ABNORMAL ODOR IN COCKPIT AND CABIN DURING CLIMB AND DESCENT. FLT ATTENDANTS REPORTED ODOR CAUSING EYE AND THROAT IRRITATION AND WAS STRONG IN THE CABIN. ACCOMPLISH TROUBLESHOOTING STEPS AS OUTLINED IN MT 72-016. TROUBLESHOOTING TO INCLUDE BORO OF HPC STAGES 3 AND 4. ACCOMPLISHED MT 72-016, FOUND OIL LEAK AT THE OIL FILTER BYPASS SWITCH LEAKING INTO THE APU INLET. INOP APU AND ACCOMPLISHED PNEUMATIC DUCT BURNOUT, CABIN SMELL NORMAL.