As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERSION / DECLARED EMERGENCY. PASSING FL 31.7 CABIN PRESSURIZATION WARNING HORN SOUNDED. CABIN ALT WAS 10,000FT. EMERGENCY DESCENT TO 10,000FT. PRESSURE STABILIZED. REMOVED AND REPLACED PRESSURE CONTROL PANEL. REMOVED AND REPLACED NR 1 ENG PNEU BLEED HIGH STAGE VALVE.