Frayed, Stuck, Cracked

摘要

The pilot's lower seat frame support legs cracked at the frame rail cut outs where they attach to the seat-height adjustment arms. Seat frame p: 05142047. Cracks were found in the flange of both the 1/h and r/h fuselage bulkheads at station 17. The cracks are radiating from the upper bolt hole where the fueling step attaches.