What was found
MACH TRIM FAIL ILLUMINATES ON RECALL. ACFT GROUNDED. ON INITIAL DFCS BITE, FCC A SELF TEST FAILED. FOUND MACH TRIM AC CIRCUIT BREAKER OUT. RESET CIRCUIT BREAKER IAW RESET PROCEDURES IAW MM 20-60-01. NO DEFECTS NOTED. PERFORMED DFCS LRU INTERFACE TEST FOR FCC (DFCS/AT) BITE GRP NR 35 IAW AMM 22-11-33, LAND VERIFY TEST BITE NR 49 IAW AMM 22-11-00, HGS SENSOR TEST FOR FCC/AT AND HGS OPS TEST IAW SMM 34-36-00, ALL OPS NORMAL, NO FAULTS FOUND OR DEFECTS NOTED. ACFT LWMP STATUS & SCREW UPGRADED TO CATIIIA A/L & HGS.