The accidents you refer to are United Airlines Flight 232, ValuJet Flight 592, American Airlines Flight 191. I actually attended at a presentation the crew of UA Flight 232 held. I am very familiar with important accidents in aviation and I even carry a set of NTSB report summaries with me in my flight bag in case I have to remind crew members or students. I also know and agree that we should not limit our understanding of emergency procedures to what is written in the POH.

However, I also know when my idea has been beaten beyond recognition. This thread started out as a query to find out if asymmetrical thrust was a common or recognized procedure. The verdict is out and it is not a normal procedure. Sure, you can use power to duplicate the effect of a rudder, but it cannot be used to supplement it because once you touchdown, you must reduce the thrust you are using to track the centerline.

Now the argument has been changed from adopting this as normal procedure to using it as an emergency procedure. That is fine. If you ever get in a situation where the only way out is to use asymmetrical thrust, then I still believe you made a mistake. More likely than not you got yourself in that situation because of poor planning. Even if you planned the flight perfectly, but an unforeseen change in weather took place, I still believe depending on the aircraft and environment, it would be better to land off the runway into the wind than land on the runway and drift off it sideways. If you find yourself in this situation do whatever you wish and as long as no one gets hurt, then nice job.

As far as me or others being narrow minded, I am in the process of revising the takeoff procedures my company uses. My experience using this procedure is limited to twins less than 6000 pounds, but I believe it can be applied to larger aircraft. I did not go up to the chief pilot and tell him that this procedure will better because I used to use it in Barons and the aerodynamics proves it works. Instead, I asked him why the takeoff procedure is written the way it is and what would be the possible problems with revising it. He is currently reviewing it and if he determines that it is no good, than I will accept it because it is a different plane and he has more experience in it than me.

Asymmetrical thrust will yaw the airplane beyond the limit of the rudder, but it will not help you once you are on the ground. And as stated many times, if you find yourself needing to do this, then you probably made a mistake early in your planning.