Aircraft wheel tie bolts are extremely safety-critical, as they hold the two halves of the wheel together and must withstand the stress of landing. The landing of the aircraft, as well as the loosening and tightening of the bolts over time, can cause them to stretch and eventually crack. Broken bolts on the flight line often cause delays of departure. That is why airlines continually strive to employ the best available test methods to locate potential problems in the tie bolts....
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