As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LOUD SQUEAL FROM LEFT AND BEHIND CAPT LIKE A FAN SEIZING. SLIGHT SMOKE ODOR. COULD NO RECREATE ISSUE DESCRIBED. PERFORMED VISUAL INSPECTION AND OPS CHECK OF THE FOLLOWING SYSTEMS: RECIRCULATION FANS (AMM 21-22-10), TRU (AMM 24-31-01), DISPLAY SUPPLY FAN AND CHECK VALVE (AMM 21-24-12).