As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED ACS LOW IN FLOW MSG POSTED ON POWER UP. THEY WERE ABLE TO CLEAR AFTER CYCLING ACS EMER SHUTOFF CONTROL. TROUBLESHOOTING FOUND THE ACS EMER SHUTOFF VLV MICRO SWITCH DEFECTIVE. THE SWITCH WAS REMOVED & REPLACED WITH NEW UNIT. FUNCTIONAL CHECKS WERE SATISFACTORY.