March 27th in September 11 Attacks Research and Analysis by . 3 comments .

Missile Impact Images

Wing spars are meant for horizontal loads.  They are not meant for slicing through steel columns:

737-front-spar1-9-2014-1-48-16-pmwing structure completely fragmented by the exterior wall_smallGougesApproach

fuselage shattersleft-side-dents1 closeup-left-side center-right center-leftsliced-steeltrajectories-1animated arrow burst9 columns 9 columns 2WTC2_left-side-enhanced-cloDAMAGED SFRM

This is how the NIST explained it:

wing burst

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