What was found
LOST ALL DATA ON BOTH FMCS FOR APPROXIMATELY TWO MINUTES. RECEIVED A/T LIM FLAG. ACFT GROUNDED - YES. ACCOMPLISHED B737-900 FIM 33-32 TASK 815. ALL DISCRETES ARE READING AS THEY SHOULD. ACCOMPLISHED A/T BITE IAW FIM 22-31, TASK 801. CURRENT STATUS SHOWS NO FAULTS. ACCOMPLISHED DFCS LRU REPLACEMENT TEST FOR FMC, BITE GRP 34, IAW FIM 22-11, TASK 802. ALL TESTS PASSED. ACCOMPLISHED LRU REPLACEMENT FOR DFCS AT, BITE GRP 35, IAW FIM 22-11, TASK 802. ALL TESTS PASSED. ACCOMPLISHED A/T SYSTEM OPS TEST IAW AMM 22-31-00-710-801. OPS CHECKED GOOD, NO FAULTS.