Every once in a while I get questions from clients about cross wind landings. From a passenger perspective, it could look like the pilot made a bad landing. Lets talk about the process of landing. The surface winds on the ground are constantly changing throughout the day. Pilots always prefer to land in the direction of the wind. In this case it would be a headwind. The airplane performs better in a headwind. A headwind also helps to slow down an airplane during the landing. Sometimes the wind changes ninety degrees from the landing runway forcing the pilot to make a crosswind landing. While on short approach the airplane has a natural tendency to weather vane or drift into the direction of the wind. You can see this sometimes if you are standing outside & off the approach end of the runway. It would look like the airplane is flying sort of sideways depending on how strong the wind is. This is quite normal as long as you don't land that way. What will happen next is on short final or around 500 ft the pilot will use the cross wind landing technique. Basically, they will use cross controls to keep the airplane aligned with the center line of the runway. The technique starts by turning the control yoke slightly into the wind while also applying opposite rudder pedals which controls the vertical fin on the tail. The pilots will keep the controls crossed onto landing. As a result, passengers may notice one main landing gear touch down slighty earlier then the other. This is quite normal. As a student pilot, this can be a challenging lesson to learn. Once a pilot makes it to a major air carrier this technique you probably done a 100,000  times & therefore becomes second nature.