Narrative:

I was working B737-800 aircraft with mechanic Y; we had a number 3 [main] tire change. While replacing number 3 tire; we were interrupted several times by my lead mechanics and co-workers. Some of these interruptions included work reassignments and personnel reassignments. There was so much confusion from this it created verbal altercations amongst us; leading me to miss the installation of washer... Task focus was lost during installation of number 3 tire. [Recommend] to stop; access situation and continue when ready to complete task. Graveyard [shift]. A-check. Maintenance supervisor generated a maintenance item [for the washer]. Complacency.

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Original NASA ASRS Text

Title: Two Line mechanics report how interruptions and a verbal altercation during a right Main Landing Gear (MLG) tire change resulted in the axle nut tang washer not being installed on a B737-800 aircraft.

Narrative: I was working B737-800 aircraft with Mechanic Y; we had a Number 3 [Main] tire change. While replacing Number 3 tire; we were interrupted several times by my Lead mechanics and co-workers. Some of these interruptions included work reassignments and personnel reassignments. There was so much confusion from this it created verbal altercations amongst us; leading me to miss the installation of washer... task focus was lost during installation of Number 3 tire. [Recommend] to stop; access situation and continue when ready to complete task. Graveyard [shift]. A-Check. Maintenance Supervisor generated a Maintenance item [for the washer]. Complacency.

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.