As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 4400 - DURING CRUISE FROM PIT-CVG, A LIGHT BURNING ODOR WAS NOTED BRIEFLY. THE AIRCRAFT CONTINUED TO CVG, WHERE IT LANDED SAFELY. MAINTENANCE INSPECTED THE AIR CYCLE MACHINE OIL AND REMOVED AND REPLACED THE COALESCER BAGS. OPERATIONAL CHECKS GOOD. AIRCRAFT OK FOR SERVICE. (M)