2010-NM-144-AD - McDonnell Douglas Corporation Model DC‑9‑10 Series Airplanes, DC‑9‑30 Series Airplanes, DC‑9‑81 (MD‑81) Airplanes, DC‑9‑82 (MD‑82) Airplanes, DC‑9‑83 (MD‑83) Airplanes, DC‑9‑87 (MD‑87) Airplanes, MD‑88 Airplanes, and MD‑90‑30 Airplanes, Equipped with Flight Deck Doors Installed in Accordance with Supplemental Type Certificate ST02463AT