As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PRE-FLIGHT "FD" FLAG ON CAPTAIN`S PFD. ACFT GROUNDED. HAD TO CYCLE FCC A DC CIRCUIT BREAKER BEFORE DFCS WILL GO INTO BITE. CURRENT STATUS PASSED. ACCOMPLISHED DFCS LRU INTERFACE TEST ONLY FOR FCC A, TEST PASSED, IAW AMM 22-11-33.