As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE AT 360. CABIN ALTITUDE WARNING LIGHT AND HORN SOUNDED. CABIN ALTITUDE WAS ABOVE 10,000 FT. ACCOMPLISHED QRM PROCEDURE. SELECTING BOTH PACKS GOT CABIN UNDER CONTROL. NO OTHER STATUS OR CAUTIONS.R&R CABIN PRESSURE OUTFLOW VALVE IAW 21-31-03-002-001, 21-31-03-402-010. C/W EXCESSIVE CABIN PRESSURE LEAKAGE TEST IAW 05-51-24-702-001. OPS AND LEAK CHECKED GOOD.