As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FLT 2188 - AIRCRAFT LOST PRESSURIZATION AT FL 330 AND CABIN ALTITUDE WAS INCREASING. FLIGHT DIVERTED TO CLT AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE RIGHT ENGINE CHANGE OVER SWITCH AND CARGO DOOR SEALS AND ADJUSTED THE LEFT ENGINE CHANGE OVER SWITCH. OPERATIONS CHECKED NORMAL. REFERENCE NR 95ZZZZ154.