Can someone please explain what a wing leveler is. Do they work?
A "wing-leveler" does just what it says - it uses the ailerons to keep the wings level. It's sort of a "poor-man's autopilot", in that it doesn't follow a course, intercept a radial, or hold altitude. However, simply keeping the wings level tends to keep a plane on course, and certainly gives time for the pilot to do other things. It's certainly a welcome option.
If you have one in your plane, and it works, consider yourself very lucky. Getting any kind of autopilot for a 150 is very expensive. You can easily spend what a 150 costs to buy just in getting an autopilot installed.
