HEMS SPIFR Question  

Been flying 40 years. IFR EMS 26. There is a MINIMUM altitude and airsped for autopilot engagement in the RFM. These are HARD limitations.  Autopilot failure and SE failure are practiced VFR. It is prohibited in the RFM of the aircraft I fly to turn off the autopilot in IMC. GOM does not address this. A good practice is to set up the cockpit for IMC EVERY TIME. even VFR. In the event of that one day you might go IIMC, it's a non event.