Narrative:

A B767 aircraft arrived at one of the gates after a super tug move from another gate. Upon arrival; a large gash approximately ten inches long was found in the center tread of the left nose tire. The airplane arrived at my gate during a very heavy period of international departures. I had been working on another aircraft in the area; when I was instructed to go and change the tire in question as well as work two open logbook items on clogged galley drains and a clogged sink drain. I had about 30 minutes to accomplish the tasks.I don't remember taking a wheel spacer off of the old tire; so it may not have been present to reinstall. I installed the new tire and torqued the nut to the appropriate values. There was no excessive play in the wheel assembly and the threads looked normal for a nose tire axle nut. I signed the logbook off at departure time and went to work another aircraft. It was a hot day. I had had a very challenging afternoon working on other aircraft earlier in the shift; the workload was very heavy; we are currently six aircraft maintenance technicians (amt)s short on international at this station; and I hadn't changed a nose tire in quite some time. I believe all of these to be factors in missing the wheel spacer.

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Original NASA ASRS Text

Title: The left nose tire assembly previously replaced on a B767 aircraft was missing an axle nut washer.

Narrative: A B767 aircraft arrived at one of the gates after a Super Tug move from another gate. Upon arrival; a large gash approximately ten inches long was found in the center tread of the left nose tire. The airplane arrived at my gate during a very heavy period of international departures. I had been working on another aircraft in the area; when I was instructed to go and change the tire in question as well as work two open logbook items on clogged galley drains and a clogged sink drain. I had about 30 minutes to accomplish the tasks.I don't remember taking a wheel spacer off of the old tire; so it may not have been present to reinstall. I installed the new tire and torqued the nut to the appropriate values. There was no excessive play in the wheel assembly and the threads looked normal for a nose tire axle nut. I signed the logbook off at departure time and went to work another aircraft. It was a hot day. I had had a very challenging afternoon working on other aircraft earlier in the shift; the workload was very heavy; we are currently six Aircraft Maintenance Technicians (AMT)s short on international at this station; and I hadn't changed a nose tire in quite some time. I believe all of these to be factors in missing the wheel spacer.

Data retrieved from NASA's ASRS site as of July 2013 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.