Recently had the left wheel fairing drag the bottom rear after a landing. The mounting bracket was torn in a jagged break halfway up its length allowing the wheel fairing to pivot back dragging on the ground. It was the last landing of my BFR and neither I or the CFI felt anything unusual until we stopped at the tie down and saw it rotated back and the rear bottom was ground off. First question is was my case unusual or do the brackets fatigue over time. Next problem is finding one since there seem to be very scarce. Was also told to find a bracket from a later model since they are thicker. Any advice as to a cause and solution to resolving this?