As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT EB941 FROM MSY TO MCI. AFTER TAKEOFF, CREW HEARD A LOUD SQUEAL FROM THE R2 WINDOW. AIRCRAFT RETURNED TO MSY AND LANDED WITHOUT INCIDENT. FOUND THE R2 WINDOW AFT TRACK LOWER ROLLER BEARING LOOSE. RESECURED BEARING. OPS AND LEAK CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.