<page_title> List of Air Ministry specifications </page_title> <section_title> 1940–1949 </section_title> <table> <cell> X.26/40 <col_header> Spec </col_header> </cell> <cell> Airspeed Horsa <col_header> Designs </col_header> </cell> </table>
Airspeed Horsa has the X.26/40 specification.