As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIRTY SOCK SMELL COMING THRU VENTILATION SYSTEM / PERFORMED POST WASH BLEED DRY OUT PROCEDURE ON L & R BLEEDS IAW CRJ-900 AMM 72-00-00-100-803-A01-PSA STEPS H(6) THROUGH SHUTDOWN. NO ABNORMAL ODORS NOTED AFTER EXTENDED VERIFICATION STEP.