Recently, I was on a flight flown by Embraer RJ-135. The aircraft is relatively new.

Weather was very good. But, the plane rolls left and right. I will explain. I felt the roll, so I looked outside using the horizon as reference. The left wing drops about two feet and climbs two feet back up. Of course, at the same time, the right wing would climb two feet up and then two feet down. This oscillated through out the whole flight.

I want to call it aileron roll, but I am not sure.

What are the possibilities? Could the pilots be constantly playing with some controls all the time during the flight? Or the ailerons were not properly trimmed? The engine output powers were not synced?

This happened to me on an MD-80 ten years ago, but less severe.

I am thinking, just like there is something called the automatic yaw damper, there must be some computerized automatic aileron stabilizer of some sort. Is there? That thing could have been turned OFF, or not functioning properly.

Thanks,
AA