Narrative:

Arrived 1+ hour before departure to find #4 main in what appeared to be an excessively worn condition. Called maximum 1 hour before; then again 30 mins prior to departure requesting an inspection of the tire. Maintenance arrived 20 mins prior to departure and in a hurry to make an on-time departure; signed off the tire for replacement at ZZZ1. I thought it odd that they did not replace the tire; but was not my judgement call. At arrival at ZZZ1; maintenance inspected the tire and declared it unfit for usage and questioned why ZZZ did not replace it. I did all I could do within my realm of authority/authorized. I guess I could have been more assertive by making the captain inspect the tire and refuse it in ZZZ.

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Original NASA ASRS Text

Title: A B737-800 WAS DISPATCHED WITH #4 MAIN TIRE WORN OUT OF LIMITS. RECEIVING MAINT STATION REPLACED TIRE AND WHEEL ASSEMBLY AND RPTS TIRE WORN BEYOND LIMITS.

Narrative: ARRIVED 1+ HR BEFORE DEP TO FIND #4 MAIN IN WHAT APPEARED TO BE AN EXCESSIVELY WORN CONDITION. CALLED MAX 1 HR BEFORE; THEN AGAIN 30 MINS PRIOR TO DEP REQUESTING AN INSPECTION OF THE TIRE. MAINT ARRIVED 20 MINS PRIOR TO DEP AND IN A HURRY TO MAKE AN ON-TIME DEP; SIGNED OFF THE TIRE FOR REPLACEMENT AT ZZZ1. I THOUGHT IT ODD THAT THEY DID NOT REPLACE THE TIRE; BUT WAS NOT MY JUDGEMENT CALL. AT ARR AT ZZZ1; MAINT INSPECTED THE TIRE AND DECLARED IT UNFIT FOR USAGE AND QUESTIONED WHY ZZZ DID NOT REPLACE IT. I DID ALL I COULD DO WITHIN MY REALM OF AUTH. I GUESS I COULD HAVE BEEN MORE ASSERTIVE BY MAKING THE CAPT INSPECT THE TIRE AND REFUSE IT IN ZZZ.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.