I don't doubt that the investigative report is likely to return the probable cause of the accident as pilot error. Which a plain reading of the facts established would seem to indicate they should. But it will be interesting to see if they also go on to list the RA failure and the way the RA is configured within the AT system of the 737NG, as a significant contributing factor. I suspect they will and that this may well cause problems for Boeing and its lawyers. It is certainly something that needs to be fixed.