As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN FLT NR 620, HSV/LAS AUTO PRESSURIZATION FAILED. AUTO SWITCHING ACCOMPLISHED. QUICK REFERENCE HANDBOOK PROCEDURES ACCOMPLISHED. ITEM TRANSFERRED TO DMI LOG NR 1994 IAW 21-15-2B. TRANSFERRED FROM DMI LOG NR 1994. TROUBLESHOT SYSTEM. REMOVED AND REPLACED NR 1 PRESSURE CONTROLLER IAW AMM 21-31-02. SYSTEM OPS CHECKED NORMAL. CLEARED DMI. AC RETURNED TO SERVICE.