I recently flew UA between ORD and LAX on the oldest airplane I ever saw in my life (a B767). It was in a good shape overall but the interior was extremely old fashioned. I only got a partial reg which was written just above the front landing gear and which read "6667". I immediately looked at airfleets.net and saw that the closest reg to that was N667UA. According to this website, the plane was delivered new in 1998. I thought it was impossible because a 10 year old plane would have a much newer interior. Can anyone confirm that I flew this airplane? If so, was it really delivered "new" in 1998?