I roto i te Maehe 1937, i hangaia e te roopu hoahoa i arahina e Donald Douglas, Jack Northrop, me Ed Heinemann he tono mo te kaipatu pahū marama e whakahaerehia ana e te tokorua 450 hp (336 kW) Pratt & Whitney R-985 Wasp Junior miihini radial i whakairihia ki runga i te parirau pokohiwi. I whakaarohia ka taea e ia te kawe i te 1,000 pauna (454 kg) utaina poma i te 250 mph (400 km / h). I whakaatuhia e nga ripoata o te mahinga rererangi mai i te Pakanga a-iwi Paniora ka tino ngoikore tenei hoahoa, ana ka whakakorea. Patai: He aha nga purongo mai i te pakanga?
Te Pakanga Taketake o Paniora