Crash Course in DensityAs airline flight 143, a twin engine 767, was passing above Red Lake on their wasto Edmonton, Canada, the still left front mechanical fuel pump warning lumination went on. There werea few options for this to happen, including the fuel pump declining, a energyline blockage, or a vacant fuel fish tank. The former two were easily dealt withconsidering that the plane could fly devoid of one fuel pump. However , the very last possibilitywas horrifying. After..