As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMBOUT, AIRCRAFT DEPRESSURISED. COULD NOT CONTROL WITH MANUAL SYTEM. DIVERTED TO DFW. DECLARED EMERGENCY. PERFORMED DETAIL GENERAL VISUAL INSPECTION OF MAIN DOOR SEAL AND ARM IAW AMM 52-11-00. NO DEFECTS FOUND. ALSO PERFORMED PRESSUIRZATION CHECK IAW AMM 21-31-00. OPS CHECK NORMAL, NO LEAKS DETECTED.