What was found
DIVERTED DUE TO AP FAIL, GSD 2 FAIL, AMS CONTROL FAULT, HSDB FAULT, SWPS ICE SPEED, HSDB FAULT, AND YD FAIL DURING CRUISE AT FL450. CREW LOST ALL TEMPERATURE INDICATIONS (SAT, TAT, OAT), LFT, AND ICING PROTECTION. EMERGENCY DECENT, RAN QRH CHECKLISTS, AND LANDED AT KHPN WITHOUT INCIDENT. REPLACED #2 DATA CONCENTRATOR UNIT IAW EMB PHENOM 300 31-41-01. SOFTWARE DOWNLOADED IAW EMB PHENOM 300 31-41-01. OPS CHECK GOOD. P/N 011-01457-00.