Narrative:

In regard to the questionable missing axle washer; on the left nose gear; I removed and replaced the left nose gear tire per the 777 boeing maintenance manual; check manual; and the procedures manual. On the work card; I misread the step and accidentally marked the block 'north/a.' the axle washer was installed and I can only speculate as to what happened to the washer after that. No damage was reported to the axle or wheel assembly. I also checked with the wheel assembly overhaul shop for reports of axle washer findings in the past 10 months and no washers were found. Mechanics at that facility have been instructed to report any washers found on the wheel assemblies or wheel assembly covers to the proper station for corrective actions required for the safety of the aircraft. I have worked on aircraft for almost 16 years and have never had any problems deviating from proper procedure or the code of federal regulations.

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Original NASA ASRS Text

Title: Mechanic reports the nose gear left axle spacer was found missing approximately nine months after he had replaced the left nose tire on a B777.

Narrative: In regard to the questionable missing axle washer; on the left nose gear; I removed and replaced the left nose gear tire per the 777 Boeing Maintenance Manual; Check Manual; and the Procedures Manual. On the Work Card; I misread the step and accidentally marked the block 'N/A.' The axle washer was installed and I can only speculate as to what happened to the washer after that. No damage was reported to the axle or wheel assembly. I also checked with the wheel assembly overhaul shop for reports of axle washer findings in the past 10 months and no washers were found. Mechanics at that facility have been instructed to report any washers found on the wheel assemblies or wheel assembly covers to the proper station for corrective actions required for the safety of the aircraft. I have worked on aircraft for almost 16 years and have never had any problems deviating from proper procedure or the Code of Federal Regulations.

Data retrieved from NASA's ASRS site as of May 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.