</font><font color="blue" class="small">( That should be easy for a TC33DA. Heck, with a smooth surface and tires well inflated I can move a 5000 lb. aircraft by myself. Getting it over the hump and into the hangar is where I run into problems.
Be very cautious about the turns you make. Tricycle gear aircraft are not meant to make sharp turns. There are nosegear steering stops to limit how much deflection can be applied. Forced beyond those stops very $$expensive$$ nosewheel damage will occur. The stops are easy to feel and respect when moving an aircraft by hand; by machine it's easy to blow past them. Most aircraft have witness marks applied with red tape on the nosewheel strut to mark the limits of deflection. But you probably know this already.
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Your comments are right on, Bob. Many converted Ford 8Ns have been used for tugs. More than the power required to tow is the ability to stop. Most tugs I have seen have plenty of ballast, low center of gravity, and good brakes.
Some airplanes allow the nosewheel to be unpinned from the steering mechanism so they can be towed at short turning radii. The Hawker 700/800/1000s have this. On the other hand, a King Air B200 which is right at the 12,500 lb mark has a telltale bar installed in it's nosegear. If a pilot sees it distorted while he is doing preflight, you can bet some poor tug driver is gonna take some heat. /forums/images/graemlins/mad.gif