As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT SIDE CABIN DOOR BEGAN FLASHING RED UNLOCKED DURING CRUISE. ALSO INDICATING UNLOCKED IN FWD VIEWPORT. COCKPIT INDICATIONS FOR DOORS AND PRESSURIZATION WERE NORMAL. LIGHT WENT OUT DURING DESCENT AND BOTH INDICATOR WINDOWS INDICATED GREEN & LOCKED. PERFORMED DVI OF R1 DOOR AND MECHANISM WITH NFF. PERFORMED OPS CHECK OF DOOR SLIDE LIGHT AND HORN WITH NFF. PERFORMED OPS TEST OF DOOR LOCKING MECHANISM IAW AMM 52-10-20 P. BLOCK 501 AND NFF. R1 DOOR WARNING OPERATES NORMAL IAW MM 52-71-00-05-09.