B737 Undifferentiated or Other Model
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 190; Flight Crew Total 4711; Flight Crew Type 4711
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Issued New Clearance; Air Traffic Control Provided Assistance; Flight Crew Landed As Precaution; Flight Crew Diverted; Flight Crew Landed in Emergency Condition; Flight Crew Overcame Equipment Problem
Aircraft
We were at FL410 and the autopilot disengaged.  We were able to reengage the autopilot. The autopilot disengaged once again and the flight director biased out of view.  We asked ATC for a heading and a lower altitude to leave RVSM airspace.  We descended to FL290 and flew assigned headings from ATC.  We looked through the QRH for mode control panel failure checklist and could not locate one.  The mode control panel remained locked out for the remainder of the flight.  We continued the remainder of the flight raw data.  We evaluated the weather at ZZZ1 and several other close by airports.  The Weather was best at ZZZ for raw data.  We requested priority handling. We TESTed the flight attendants. We made PAs to the passengers to make them aware of the fire trucks on arrival.  The flight continued uneventfully to ZZZ.
MCP/Autoflight system failed in cruise flight FL410; requested priority handling; heading was assigned to ZZZ; descended to FL290; TEST FAs; no QRH procedure available for MCP failure; ILS 9 approach flown with no abnormalities.
B737 flight crew reported the autopilot disengaged twice during cruise flight at FL410.  The crew stated they had no QRH procedure for the failure resulting in a diversion.