2010-NM-120-AD The Boeing Company Model DC-8-11, DC-8-12, DC-8-21, DC-8-31, DC-8-32, DC-8-33, DC-8-41, DC-8-42, and DC-8-43 Airplanes; DC-8-50 Series Airplanes; DC‑8F‑54 and DC‑8F‑55 Airplanes; DC-8-60 Series Airplanes; DC‑8‑60F Series Airplanes; DC-8-70 Series Airplanes; and DC‑8‑70F Series Airplanes