As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WOULD NOT PRESSURIZE AFTER TAKE OFF. ON DESCENT COMING THROUGH 10,000 FEET AIRCRAFT APPEARED TO BEGIN PRESSURIZING NORMALLY. PERFORMED FUNCTIONAL TEST OF PRESSURIZATION CONTROL SYSTEM IN AUTOMATIC MODE IAW AMM 21-31-00-700-802-A. FUNCTIONAL TEST GOOD. NO DEFECTS NOTED.