What was found
AFTER TAKEOFF FROM LTX THE PRESSURIZATION SYSTEM DOES NOT WORK IN AUTO MODE OR MANUAL MODE, CABIN REACH FL 210. AFTER TAKEOFF FROM LTX LOST ALL THE TAKEOFF SPEEDS AND WEIGHTS, UNABLE TO RESET THE SPEEDS, WEIGHTS AND OTHER FMS FUNCTIONS. AIRCRAFT DIVERTED TO GYE WITH NORMAL LANDING. MAINTENANCE PERFORMED RTS OF ESC IAW 21-08-01, NO FAULTS FOUND OP’S CHECK NORMAL. PERFORMED FUNCTION TESTS OF CABIN PRESS AUTO CONTROL SYSTEM IAW 21-31-00, NO FAULTS NOTED. GRD PRESSURE NORMAL IN AUTO AND MANUAL. PERFORMED OP’S CHECK OF ADC SWITCHING IAW 34+-16-00. OP’S CHECK NORMAL, RTS ON ADC NR 1 & NR 2 IAW 34-16-01, NO FAULTS NOTED. OP’S CHECK NORMAL. PERFORMED RTS OF FMS IAW 34-63-01, NO FAULTS NOTED, OP’S CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.