ah, the majestic airplanes, soaring through the skies, a marvel of human ingenuity! their design, a carefully crafted formula, balances power with grace. but, what if there was a way to leave out the standard safety checks, compelling you to start anew with pre-expiration parts, potentially causing malfunctions? now, let's delve deep into this, focusing on the materials and components that have been outright banned but are still being used, inviting you to wonder what secrets lie hidden beneath the surface, carefully concealed from the public eye.