As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 3011 - AFTER DEPARTURE FROM DTW, THE CABIN BEGAN TO FILL WITH SMOKE. THE CREW SHUT OFF THE BLEEDS AND RETURNED TO DTW WITHOUT INCIDENT. MAINTENANCE PERSONNEL REPLACED THE LEFT AND RIGHT WATER SEPARATOR SOCKS. ALL SYSTEMS OPERATED SATISFACTORILY. (M)