As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT DIVERTED UNDER AMBER ALERT DUE TO CABIN PRESSURE PROBLEM. FOUND INBOARD AND OUTBOARD PRESSURE SAFETY RELIEF VALVES FAILED. REPLACED PRESSURE SAFETY RELIEF VALVES. [SUP 4-24-07] FOUND OUTBOARD SAFETY VALVE OUT OF LIMITS. REPAIRED AND CALIBRATED. NO FAULT FOUND ON INBOARD SAFETY VALVE.