The submitter describes an apparent failure of the steering lock pawl (P/N 0742147-6) in the tail wheel of this airplane. “Upon landing...(tail wheel castor swung) ...the aircraft to the right and off the runway. The aircraft sustained damaged to its left wing. Investigation disclosed the tail wheel steering pawl was worn to a point that it would not sufficiently lock the locking collar. (This) reporter’s concern is wear of this pin is not easily apparent -- except through a write-up by a pilot experienced with this problem. Visual inspection of the tail wheel assembly would not disclose this problem.”

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