Trader AL, When a main spar in a wing, tail or Pylon breaks, the resulting release of energy looks and sounds very much like a bomb.
Go find the films of the test of the 777 Wing SPar to destruction. When the SPar lets go it looks and sounds like someone exploded a bomb in the Boeing factory.
As a science experiment of your own, find a big dry stick and crack it, makes a lot of noise and releases a lot of energy into your hand. Now imagine a big I beam steel girder breaking (which is pretty much what the spar of a wing is, only bigger.)
Wino