What was found
UPON TAKEOFF, CAB ALT AND RATE INDICATIONS SHOWED 0 FROM 2000 TO 8000 FT IN AUTO MODE. FACT 24FEB23 21:52 CLT CYCLED CPAM C/B, PERFORMED PRESSURIZATION CONTROL SYSTEM FUNCTIONAL TEST IN AUTO MODE IAW AMM 21-31-00-700-802-A. SYSTEM OPS NORMAL, OK FOR SERVICE