As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AIRCRAFT NOT GROUNDED) R1 DOOR SHOWED OPEN ON FLIGHT DESCENT. / PERFORMED OPS CHK OF DOOR WARNING SYSTEM OF R1 DOOR, AND PERFORMED PRESSURIZATION TEST. REF AMM 52-71-00-710-001-A AND 05-53-00-780-002-A01. NO DEFECTS NOTED AT THIS TIME OK FOR SERVICE."