As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AIRCRAFT 6715, L/P 6324366) NOISE FROM COCKPIT AREA FOLLOWED BY L RECIRC FAN EICAS MESSAGE AND SLIGHT ODOR REPORTED BY FLIGHT ATTENDANTS FROM CABIN. CORRECTIVE ACTION: R/R'D LEFT RECIRC FAN PER B757 AMM 21-25-01 AND BOTH RECIRC FILTERS PER B757 AMM 21-25.