Complex sentence: In May 1951, it was reported that the Meteor 4's tail unit lost half its strength when the skin tore, the skin tearing was found to originate round rivet holes, access panels or discontinuous stringers (stress risers).
Split into simpler sentences: In May 1951, it was reported that the Meteor 4's tail unit lost half its strength when the skin tore. The skin tearing was found to originate round rivet holes, access panels or discontinuous stringers (stress risers).