As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CMH - FLT 4576 - AFTER TAKEOFF, THE FLIGHT ATTENDANT REPORTED STRONG BURNING RUBBER ODOR. PERFORMED PNEUMATIC BLEED CHECK WITH BOTH ENGINES AND APU OPERATING AND RUN UP AT POWER SETTINGS. NO UNUSUAL ODOR WAS NOTED IN THE CABIN OR COCKPIT. AIRCRAFT WAS THEN RETURNED TO SERVICE. (M)