As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN ALTITIDE HIGH EICAS MESSAGE AT FL220. FCV 2 SHOWED CLOSED. RAM AIR OPEN ON ECS SYNOPTIC PAGE AFTER EMERGENCY DESCENT AND 15 MW @ 8000 PACK 2 OFF EICAS MESSAGE DUE TO PRESSING DUMP BUTTON. DECLARED EMERGENCY, LANDED WITHOUT INCIDENT. C/W CPCS OUTFLOW VALVE TEST IAW AMM 21-31-02. PRESSURE CONTROL OPS TEST IAW AMM 21-31-01. AIR CONDITIONING OPS TEST PER AMM 21-00-00. ALL OPS CHECK GOOD.