As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUSELAGE DOORS MASTER WARNING ILLUMINATED SEVRAL TIMES IN FLIGHT. SAW RATE OF CLIMB INCREASE AS SOON AS AFT PAX DOOR SHOWED CLOSED. RETURN TO FIELD. LANDING UNEVENTFUL. REMOVED FROM SERVICE. INTERROGATED CDS, FOUND NO CPC FAULTS. PRESSURIZED AND DEPRESSURIZED AIRCRAFT IAW AMM 21-00-00-863-801, AND 21-00-00-863-802. NO DEFECTS NOTED. RETURNED TO SERVICE.