In the event of an air crash, the 'black box' is always safe. Why cannot the entire aircraft be made of the same material that is used to manufacture the black box?
The box is composed of three layers to provide different types of protection to the recording medium. The outermost shell is a case made of hardened steel or titanium designed to survive intense impact and pressure damage. The second layer is an insulation box while the third is a thermal block to protect against severe fire and heat. Together, these three layered cases allow the FDR and CVR to survive in all but the most extreme ...more