Originally Posted by
MSPeconomist
I was thinking of the TWA 800 crash (shortly after takeoff) where IIRC the problem originated in the center fuel tank.
747s carry fuel in the wings and center tanks as needed. TWA800’s center wing tank (located inside the main body of the plane at the wings) had minimal fuel in it and a high amount of fuel vapor, which became susceptible to explosion after being exposed to a spark from faulty wiring.