While the United States Army Air Corps could block any sales it considered detrimental to the interests of the US, the NA-73 was considered to be a special case because it had been designed at the behest of the British.
O United States Army Air Corps (USAAC) podía bloquear calquera venda que se considerase prexudicial para os intereses dos Estados Unidos, pero o NA-73 foi considerado un caso especial ao ser deseñado por iniciativa dos británicos.