What was found
ON FINAL, WITH APP ARMED AND TRACKING. ACFT FMA WENT TO TOGA AND LNAV, WITH NONE SELECTED. IAS/MACH WINDOW WENT BLANK AND SPEED WAS NON-SELECTABLE. BOTH FLT/DIRECTORS WERE SELECTED TO OFF AND THEN RE-ENGAGED. SYS RESTORED AFTER APPROX 30 SECONDS. NO FLIGHTS FOUND DURING FMC BITE TEST DFCS BITE TEST. NO CURRENT OR INFLIGHT FAULTS. HGS BITE CK OK - NO CURRENT OR INFLIGHT FAULTS FOUND. MCP TEST ACCOMPLISHED NO FAULTS. ACCOMP FIM 22-11, 801 AND LAND VERIFY TEST, ALL CKS NORMAL.