<page_title> Airborne observatory </page_title> <section_title> Airplane-based observatories </section_title> <table> <cell> NASA Kuiper Airborne Observatory (KAO) <col_header> Observatory </col_header> </cell> <cell> Lockheed C-141A Starlifter <col_header> Aircraft </col_header> </cell> <cell> 1974 <col_header> In-service </col_header> </cell> </table>
The Kuiper Airborne Observatory, first flown in 1974, was carried on a C-141A.