As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R2 DOOR FOUND AJAR AT TOP DURING PREFLIGHT. UNABLE TO OPEN DOOR FROM INSIDE. GROUNDED - YES. OPENED R2 DOOR FROM INTERIOR REF AMM: 52-41-00-860-803. PERFORMED INSPECTION OF SEALS TOP FITTINGS AND CENTERING GUIDE WITH NO DEFECTS NOTED. OPENED AND CLOSED R2 DOOR REF AMM: 52-41-00 FROM BOTH THE INSIDE AND OUTSIDE WITH NO DEFECTS NOTED.