A B757-200 was dispatched with the left nose landing gear wheel and tire assembly installed improper...

Attributes
ACN	391721
Time
Date	199801
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tower : gtf
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	ground : parked other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	391721
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
Events
Anomaly	aircraft equipment problem : critical non adherence : published procedure non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

The technician working the flight, found metal shavings on the axle inside the left nosewheel. Also, the inboard bearing snap ring was found to be off the wheel. I came out to assist him on the job. We removed the wheel and checked the axle for damage. None was noted. We then began to install a new wheel/tire, using the same parts such as the axle nut, safety bolts, etc. Unfortunately the axle nut washer was missing when the plane arrived. We did not notice this during the removal. We reinstalled it the same way, with no washer. The trip went to XXX and the same conditions (shavings) were found by the flight crew during their preflight. The wheel was changed again, and the correct washer was installed, and the aircraft was then serviceable. The main problems/factors as I see it are: 1) failure of us to note the washer was missing on arrival at ZZZ. 2) failure to closely follow the maintenance manual. On a routine job (install the washer). 3) rushing to accomplish a job due to short ground time, and cold air temperature (20 degrees F).

Original NASA ASRS Text

Title: A B757-200 WAS DISPATCHED WITH THE L NOSE LNDG GEAR WHEEL AND TIRE ASSEMBLY INSTALLED IMPROPERLY.

Narrative: THE TECHNICIAN WORKING THE FLT, FOUND METAL SHAVINGS ON THE AXLE INSIDE THE L NOSEWHEEL. ALSO, THE INBOARD BEARING SNAP RING WAS FOUND TO BE OFF THE WHEEL. I CAME OUT TO ASSIST HIM ON THE JOB. WE REMOVED THE WHEEL AND CHKED THE AXLE FOR DAMAGE. NONE WAS NOTED. WE THEN BEGAN TO INSTALL A NEW WHEEL/TIRE, USING THE SAME PARTS SUCH AS THE AXLE NUT, SAFETY BOLTS, ETC. UNFORTUNATELY THE AXLE NUT WASHER WAS MISSING WHEN THE PLANE ARRIVED. WE DID NOT NOTICE THIS DURING THE REMOVAL. WE REINSTALLED IT THE SAME WAY, WITH NO WASHER. THE TRIP WENT TO XXX AND THE SAME CONDITIONS (SHAVINGS) WERE FOUND BY THE FLC DURING THEIR PREFLT. THE WHEEL WAS CHANGED AGAIN, AND THE CORRECT WASHER WAS INSTALLED, AND THE ACFT WAS THEN SERVICEABLE. THE MAIN PROBS/FACTORS AS I SEE IT ARE: 1) FAILURE OF US TO NOTE THE WASHER WAS MISSING ON ARR AT ZZZ. 2) FAILURE TO CLOSELY FOLLOW THE MAINT MANUAL. ON A ROUTINE JOB (INSTALL THE WASHER). 3) RUSHING TO ACCOMPLISH A JOB DUE TO SHORT GND TIME, AND COLD AIR TEMP (20 DEGS F).

Data retrieved from NASA's ASRS site as of July 2007 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.

A B757-200 was dispatched with the left nose landing gear wheel and tire assembly installed improperly.