As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT AT 20000 FEET, ACS LOW INFLOW CAS MESSAGE, RAN QRH CHECKLIST ACS INHIBITED ABD SET BACK TO AUTO WITH NO CHANGE. DECENT TO 10000 FEET AND DECLARED EMERGENCY. ACS WAS INHIBITED AND SET BACK TO AUTO AGAIN WITH SUCESS. ATC WAS INFORMED AND APPROVED TO CONTINUE AT 10000 FEET