What was found
(CAN) UNABLE TO ENGAGE EITHER AUTO-PILOT AFTER TAKEOFF. WITH NO AUTO PILOT, WE CANNOT FLIGHT RVSM. CREW WAS DIVERTED FOR MAINTENANCE. SEVERAL SECONDS AFTER TAKEOFF BOTH FLIGHT DIRECTORS DISAPPEARED ON CAPTAIN & F/O PRIMARY FLIGHT DISPLAYS. MODE CONTROL PANEL ALTITUDE READOUT INDICATED 50,000 AND COULD NOT BE CHANGED, MCP SPEED WINDOW INDICATION FROZEN. MCP WOULD NOT ACCEPT ANY FLIGHT MODES. AUTOPILOTS A & B WOULD NOT ENGAGE FOR ENTIRE FLIGHT. FIM 22-11, TASK 801, WAS CARRIED OUT WITH NO CURRENT FAULTS FOUND. FAULT HISTORY SHOWS CODE 22-11067 AND 22-11066. MCP WAS REPLACED IAW MM 22-11-34. PART REMOVED INFO: VENDOR: REMOVE PN: 4082260-939, SN: 00112314 TSI 5471 CSI 2549.