Tires should be inspected frequently for cuts, worn spots, bulges on the sidewalls, foreign bodies in the treads, and tread condition. Defective or worn tires may be repaired or retreaded. The term, retread, refers to several means of restoring a used tire, whether by applying a new tread alone or tread and sidewali material in varying amounts. The following guidelines should be used for tire inspection: a. Tread Wear. Tires should be removed when tread has worn to the base of any groove at any spot, or to a minimum depth as specified by the tire or aircraft manufacturer. Tires worn to fabric in the tread area should be removed regardless of the amount of tread remaining.
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