<prompt> Qedela umusho olandelayo: Nokho, ngo-October 21, 1937, uPetlyakov waboshwa kanye noTupolev kanye nabo bonke abaqondisi be-TsAGI ngamacala ayimbumbulu okubhubhisa, ukuhlola nokusiza i-Russian Fascist Party. Ozakwabo abaningi babulawa. Ngo-1939 wasuswa ejele wayiswa e-NKVD sharashka yabaklami bezindiza eduze kwaseMoscow, lapho abantu abaningi ababengama-TsAGI base bethunyelwe khona ukuyosebenza. UPetlyakov wanikezwa umsebenzi wokuklama indiza yokulwa ephezulu, ayifeza ngempumelelo. Nokho, okuhlangenwe nakho okusebenzayo  <response>: Impi yaseSoviet-Finnish ka-1939-1940 yabonisa ukuthi lokhu kwakungekhona lokho okwakudingeka yiSoviet Air Force, noLavrentiy Beria, inhloko ye-NKVD kanye nohlelo lwe- sharashka, wayala ukuthi i-fighter ivuselelwe njengamabhomu okudilika, ngesithembiso sokuthi uPetlyakov nozakwabo bazokhululwa ekuqedeni kwayo ngempumelelo. 