As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 3049 - EN ROUTE TO LNK, THE CABIN AND COCKPIT FILLED WITH SMOKE, CREW AND PASSENGERS ON OXYGEN. FLIGHT WAS DIVERTED TO OMA, LANDED WITH NO INCIDENTS. MAINTENANCE REMOVED AND REPLACED TEMPERATURE CONTROL MASTER VALVE. OPS CHECK GOOD. (M)