As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HAD HEAVY SULFUR SMELL MULTIPLE TIMES OUT OF WEMACS, DURING FLIGHT. POST FLIGHT INSP REVEALED OIL DRIPPING OFF OF AFT ACM CASING. CLEANED HEAT EXCHANGERS. INSTALLED NEW AFT ACM TURBINE IAW MM 21-51-16. OPS CHECKED GOOD. LEAK CHECKED FAIL. 1 CONNECTION LEAKS. FOUND 2 CONNECTOR CLAMPS NEEDED ADJUSTMENT - RAN APU LEAK CHECKED GOOD.