As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK FCV FAULTS. TRIED NEW PACK VALVE, NO HELP. NEW CONTROLLER AND SOFTWARE NO HELP. NEED MORE TIME TO T/S. CTC TO FCV INTERFACE CHECK SHOWS NO VOLTAGE ON PIN 1 AND 2 OF DV21512B. NEEDS FURTHER TROUBLESHOOTING. FOUND VOLTAGE BETWEEN PINS 1 AND 2 AT CONNECTOR DV21512B WITH SWITCH IN OFF AND AUTO POSITION. REPLACED UPPER FCV. OPS AND LEAK CHECKS OK. NO MESSAGES. NO FAULT FOUND ON LAST 3 LEGS, PACK OPS SUCCESSFUL.