What was found
TAXI OUT ON PUSHING RECALL SPEED TRIM FAIL LIGHT ILLUMINATED. GROUNDED - YES. REF B737-9 FIM TASK 22-11-00-810-071 DFCS SHOWS FCC-B SPD TRIM WARN MSG 22-11323, ALPHA VAN-1 & ALPHA VANE-2 MSG 22-11035, ADIRU-2 MSG 22-1100, & ADIRU-2 MSG 22-11423. NO CURRENT FAULTS ON SYMD 1 & 2 REF B737-9 AMM 27-32-00-740-810. DFCS FFR SHOWS NUMEROUS OCCURENCE OF 22-11323 ON FCC-B ONLY. REMOVED & REPLACED FCC-B REF AMM 22-11-33 FCC SOFTWARE LOAD REQUIRED, USED CROSSLOAD FUNCTION REF AMM 22-11-33-470-803. INSTALLATION TEST, DFCS/AT LRU, & LAND VERIFY TEST PASS.