What was found
TROUBLE SHOOTING ON W/O: 1874364 TASKCARD: N/R-00001 FOR AMBER FAULT LIGHT ON HGS CONTROL PANEL ILLUMINATED IN FLIGHT. FOUND SEVERAL FAULTS RELATING TO FAULTS WITH THE #2 FMC. SUSPECT #2 FMC. REF MESSAGES 22-11071, 22-11822, AND 22-11323. NO FAULT LIGHT ON HEAD UP CONTROL PANEL. GROUNDED - YES. REPLACED #2 FMC PER B737-900 AMM TASK 34-61-02-400-801. OPS GOOD PER AMM TASK 34-61-00-710-801. ACCOMPLISHED HGS OP CHECK PER B737-900 SSM 34-36-00 SEC 500. NO FAULTS NOTED.