As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STL - FLT 715 - OVERHEAT ODOR IN CABIN AND COCKPIT WHILE ON APPROACH. NO OVERHEAT INDICATION. WING AND ENGINE ANTI-ICE ON. GAUGES DID NOT INDICATE HOT, SOME SMOKE IN CABIN. TURNED OFF ALL SYSTEMS. REPLACED LEFT TEMP CONTROL VALVE POSN IND AND RESEATED CONNECTOR FOR THE TEMP CONTROL VALVE. (M)