Two pieces of the rotor case contained light diagonal surface scratches that measured between 2.0° and 5.1° from the direction of rotation. The scratches were consistent with the direction of rotation of the rotor and with the direction the rotor was moving when it exited the case. The lower left corner of the surface contained heavier scuff marks, and the lower edges of the scuff marks were at an angle of about 6°, right end up, from the direction of rotation. A scratch located over the scuffed area was perpendicular to the direction of rotation.