As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, FLIGHT ATTENDANT IN AFT FLIGHT ATTENDANT SEAT HEARD A NOISE AND FELT PRESSURE ON THE SEAT. ALL COCKPIT INDICATIONS NORMAL. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED DOOR AND ADJUSTED LATCH MECHANISM, NO DAMAGE FOUND. CABIN PRESSURIZED WITH NO ABNORMAL SOUNDS NOTED.