As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DEFECT 701216: CABIN ALTITUDE CLIMBING AT 300-400 FEET PER MINUTE AT FL240. WE CAUGHT THE RISING ALTITUDE. EMERGENCY DESCENT STARTED AND CABIN ALTITUDE WARNING SOUNDED. CABIN ALTITUDE CLIMBING AT 300-400 FEET PER MINUTE AT FL240. WE CAUGHT THE RISING ALTITUDE. EMERGENCY DESCENT STARTED AND CABIN ALTITUDE WARNING SOUNDED.