As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLT - FLT 1190 - EN ROUTE MCO-PHL, AIRCRAFT LOST PRESSURIZATION IN AUTO MODE, AND EICAS MESSAGE 'CABIN ALTITUDE' ILLUMINATED. AIRCRAFT DESCENDED TO 10,000 FT, AND PRESSURIZATION CONTROL WAS REGAINED USING MANUAL MODE. FLIGHT DIVERTED TO CLT AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE REPLACED THE OUTFLOW VALVE. (M)