As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF WITH LT PACK INOPERATIVE, THE FLOW LIGHT CAME ON. CHECK LIST WAS PERFORMED UNSUCCESSFULLY, OUT FLOW VALVE WAS FULLY CLOSE ALL THE TIME. CABIN AUTOMATIC PRESSURE CONTROLLER DEFERRED TO CARRY OVER 090 MEL 21-24 CAT-C. FLOW CONTROL VALVE WAS CHANGED IAW AMM 21-31-02 PAGES 202 & 207. TEST OK.