As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
YLW - PRESS INTERMITTENT ON TAKEOFF TO 12,000 FT CABIN RATE IN EXCESS 3,000 FPM MULTIPLE TIMES IN AUTO MODE. RETURNED TO THE FIELD. LANDING UNEVENTFUL. AFT OUT FLOW VALVE AND AFT CARGO DOOR SEAL REPLACED TESTS GOOD. RETURNED TO SERVICE.