If icing of AoA sensors and Pitot/static probes have caused a few problems in some million hours the most logical thing to do is to improve the heating of those probes which should not require a technological marvel. Just because some people and many of them are non airbus pilots who are not comfortable with the idea of hard protections you introduce a Kill protection switch which will bring in the human element with human error. If a few aeroplanes are lost because of the operation of that killer switch at the wrong time then what? This cure may prove deadlier than the disease. In the interim period a method is given to override them. I do not agree you need to go in direct law at the drop of a hat. Don't bring in AF447 the only switch it needed was to switch the pilots with competent once. I say that with sadness because they lost their lives and there may be reasons why they were so.
Last edited by vilas; 12th Jan 2015 at 05:44.