As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ATB- DUE TO FIRST OFFICERS R2 WINDOW SQUEAL AFTER TAKEOFF. CORRECTIVE ACTION: FOUND WINDOW DRAIN TUBE INTERFERENCE WITH WINDOW SEAL. REATTACHED WINDOW DRAIN TUBE. INSPECTED WINDOW SEAL, NO DEFECTS. PRESSURIZED AIRCRAFT NO LEAKS OR SQUEALS. AIRCRAFT RETURNED TO SERVICE.