How using dimensional analysis could have prevented this crash of flight 143?

Dimensional analysis could have prevented the crash of Air Canada Flight 143 by ensuring that the fuel calculations were consistent and accurate. By checking that the units used for fuel measurement were appropriate—specifically, converting between pounds and liters correctly—engineers could have identified discrepancies in fuel calculations. This methodical approach would have highlighted the critical error of using metric units instead of imperial units, thereby allowing for corrective action before takeoff. Ultimately, proper dimensional analysis could have confirmed that the aircraft had sufficient fuel for its journey, preventing the crash.