Polikarpov I-6
... that Nikolai Polikarpov was arrested and imprisoned by the OGPU in September 1929 for the crime of industrial sabotage when his Polikarpov I-6 and I-5 fighter projects both failed to meet their deadlines?
... that <a class="mw-redirect" href="./Nikolai_Nikolaevich_Polikarpov" id="mwAkk" rel="mw:WikiLink" title="Nikolai Nikolaevich Polikarpov">Nikolai Polikarpov</a> was arrested and imprisoned by the <a href="./State_Political_Directorate" id="mwAko" rel="mw:WikiLink" title="State Political Directorate">OGPU</a> in September 1929 for the crime of industrial sabotage when his <b id="mwAks"><a href="./Polikarpov_I-6" id="mwAkw" rel="mw:WikiLink" title="Polikarpov I-6">Polikarpov I-6</a></b> and <a href="./Polikarpov_I-5" id="mwAk0" rel="mw:WikiLink" title="Polikarpov I-5">I-5</a> <a class="mw-redirect" href="./Fighter_plane" id="mwAk4" rel="mw:WikiLink" title="Fighter plane">fighter</a> projects both failed to meet their deadlines?