For those Ppruners who are using the simulator as a research tool – take care with your conclusions. Training simulators are rarely configured to fly procedures that are not authorized i.e. single channel autoland. Furthermore different simulator manufactures may use totally different techniques for their simulation, hence the differences seen by METO power and Flight Detent. I knew of one aircraft type that in one simulator the autopilot was part of the simulation and in another the real autopilot equipment was used. Simulators are clever and capable video games, but they are not real aircraft in a real world.
There are many hazards with flying unapproved procedures. Whilst it may appear to be a good plan to return on a ‘single’ Cat 3 autoland after a fire, any one subsequent system failure (ground or air) may result in a hazardous maneuver – hard nose down pitch or no flare. The requirements for dispatch / diversion cover situations such as a fire after take off in limiting weather; these have considered the probabilities of failure events and the options open to the crew; therefore crews should always follow the approved procedures and stick to the limitations