DC-3 First practical (reliable, passenger-profitable) airliner - 1936 - 333 KPH cruise - 2575 KM range NACA cowlings/airfoils, retractable gear, feathering props, blind-flying panel (all new, soon standard)
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Flaw through which they flew
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DC-3 First practical (reliable, passenger-profitable) airliner - 1936 - 333 KPH cruise - 2575 KM range NACA cowlings/airfoils, retractable gear, feathering props, blind-flying panel (all new, soon standard)