As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT FAILED TO PRESSURIZE ABOVE 900 FT AT 13,000 FT. PERFORMED PRESSURIZATION CONTROL OPS TEST IN BOTH MANUAL & AUTOMATIC MODE IAW AMM 21-31-00. PERFORMED GROUND CONNECTION VALVE ADJUSTMENT TEST IAW AMM 21-22-04. OPS CHECK GOOD.NO OTHER DEFECTS NOTED.