This case involves a child who suffered severe neurological damage from inhaling toxic fumes that entered an aircraft cabin on a commercial flight from Chicago to Seattle. The air used to pressurize the aircraft cabin of the plane was redirected from the engines. Because of a maintenance issue, an engine leak escaped through a broken seal causing toxic fumes to be released into the cabin. The child is unable to perform basic tasks at the same level she did before exposure to the toxic fumes. An aerospace engineering expert was sought to speak to the proper steps and airline should take to fix and report this issue.