The ME-162 Komet
The German Komet was "innovative" in its time. It was small and compact with the intention of whizzing by enemies. That wasn't the case. Its fuel tank was normally trained before five minutes could pass, which made it an easy target in the sky.
The Hindenburg
The infamous Hindenberg crash was one of aviation's biggest tragedies. As it approached a landing strip in New Jersey, it collided with the ground and exploded. Due to the faulty craftsmanship, the fire was quickly ignited.