Avianca Flight 52 (1990)
As we all know, fuel management is important in aircraft. This is why the major Boeing 707 crash resulted in a necessary improvement in communication and fuel management procedures. As the flight approached JFK airport, en route from Medellin, Colombia, it crashed, killing 73 people out of 158 people. The plane ran out of fuel, and the mismatch in communication between the captain and copilot caused this fatal crash which made engineers rethink how they design planes and carry out fuel measurements (Lingoblog).