What was found
AFTER TAKEOFF AIRCRAFT NAVIGATION SYSTEMS WERE UNRELIABLE. COULD NOT INPUT ANY DATA ON MCDU, AUTOPILOT AND THROTTLES WOULD NOT ENGAGE. NO NAVIGATION. REBOOTED AIRCRAFT PWR, PERFORMED RTS ON FCC 1 & 2, GPC, MMR 1 & 2, DME 1 & 2, VIA 1 & 2, VOR 1 & 2, ALL CHECKS GOOD REF'S 22-00, 34-35, 34-35, 34-52, 31-43, 34-32.