As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
COCKPIT ODOR: STRONG SMELL OF FUMES RESEMBLING THE "DIRTY SOCK" CLICHE UPON APU STARTUP AND SUBSEQUENT TURNING ON OF THE PACKS. REMOVED AND REPLACED LH COALESCER SOCK AND COOLING TURBINE IAW CL 650 AMM 21-51-16. OPS AND LEAK CHECK GOOD. "DIRTY SOCK" SMELL WAS PRESENT ON START UP BUT SHORTLY DIFFUSED. NO DIRTY SOCK SMELL PRESENT AT THIS TIME.