As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY DECLARED. FLIGHT DIVERTED, DURING CLIMBOUT FLIGHT ATTENDANT ADVISED OF A LOUD NOISE COMING FROM THE R1 DOOR. UNEVENTFUL LANDING. FOUND DOOR SAFETY STRAP STICKING OUT OF R1 DOOR. SECURED THE STRAP IAW AMM 52-11-00-862-077. OPS CHECKED GOOD. AIRCRAFT WAS GROUNDED.