 na igbukpọsị oké ọhịa, ịgba ohu Esizi-ala-eze, na ida successively site mberede mgbanwe ihu igwe ekere uwa maka otutu site na ndị ibu-oké ifufe 3 ... ma ugbu a, iji hụ na a mma, Gaferela Otu Narị Afọ ndụ 4, a amaghị na nihi anapụta nwere obere patented site Boeing nihi ihe ndị ọzọ 5, a jụrụ 6 na atụle nisiokwu na ụwa congresses. 