As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSTALLED OVERHAULED OUTFLOW VALVE IN A/C. UNIT CHECKED NORMAL IAW MAN. CMP. CARDS. PART FAILED WITH LESS THAN 1.5 HOURS IN AUTO AND MANUAL MODE. INSTALLED SERVICEABLE UNIT, SYSTEM CHECKED NORMAL IAW MAN. CMP. CARDS. A/C RETURNED TO SERVICE. SUSPECT CAUSE: IMPROPER OVERHAUL AND QUALITY ASSURANCE.