In light of the Pilots and Tattoos thread I had this come up in my head. I know at interviews most tattoos are covered up. With earrings obviously you wouldn't be wearing one but I'm sure the interviewers would notice a hole in one or both ears. With the industry being a conservative one I think it could have a negative impact on your image to the interviewers. On the other hand I also think its shouldn't really be a big deal IF they even notice it.