As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH PILOTS COULD DETECT AN ELECTRICAL SMELL INTERMITTENTLY IN THE COCKPIT. HEARD LOUD HUMMING AND SHORT SOUND OF FAN STRIKING SHROUD-FOUND RUMBLING NOISE IN THE COCPIT.PERFORMED TSM 21-26-00-810-837-A.R/R FAN BLEWER 20HQ OPS CHECK GOOD NO DEFECT NOTED A.A/C OK TO CONTIENUE SERVICED.