As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT PASSING 26000, RECEIVED A CABIN ALTITUDE WARNING ALSO CABIN ALTITUDE AUTO 2 EICAS. QRH FOLLOWED AND DESCENDED TO 10,000. BITE NR 2 CABIN PRESSURE CONTROLLER, FAULT NR 2 AC MOTOR. INSTALLED NEW OUTFLOW VALVE ACTUATOR IAW AMM 21-31. REPLACED SEALS ON LT PACK HEAT EXCHANGER. REPLACED CONDENSER DUE TO CRACKS. C/W SINGLE PACK CONFIDENCE CHECK IAW AMM 21-51.