1.   It also has plastic reinforced with glass fibers on the edges of the fin and on parts of the wings.

2.   Black also said an FAA expert has arrived to inspect the tail, which is made of composites, or carbon-fiber reinforced plastic that is incredibly strong.

3.   Besides turbulence, they are looking at the makeup of the tail, which is made of composites, or carbon-fiber reinforced plastic that is incredibly strong.

4.   It is made of composites, or carbon-fiber reinforced plastic that is incredibly strong.