A B737 was dispatched with the #4 wheel and tire assembly incorrectly installed on the brake unit.

Attributes
ACN	372173
Time
Date	199706
Day	Sun
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz
State Reference	US
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
ASRS Report	372173
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
Events
Anomaly	aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	other Other
Supplementary
Air Traffic Incident	other

Narrative:

On approximately jun/xa/97 I was involved with a #4 tire installation. After aligning the discs on the brake, I had packed the outer bearing and installed the tire onto the brake and torqued it per the job card. I then safetied the nut with its retaining ring and installed the hub cap. On approximately jun/xb/97 my foreman was informed that a mechanic in xyz had found the brake not engaged in the anti-rotation lugs on the wheel. The tire and brake were changed for precautionary measures and the plane returned to service. I was informed of this upon my return on jun/xc/97. To the best of my knowledge the anti-rotation lugs were engaged at the time I had signed for the work completed. I followed the job card step by step, and signed for work completed.

Original NASA ASRS Text

Title: A B737 WAS DISPATCHED WITH THE #4 WHEEL AND TIRE ASSEMBLY INCORRECTLY INSTALLED ON THE BRAKE UNIT.

Narrative: ON APPROX JUN/XA/97 I WAS INVOLVED WITH A #4 TIRE INSTALLATION. AFTER ALIGNING THE DISCS ON THE BRAKE, I HAD PACKED THE OUTER BEARING AND INSTALLED THE TIRE ONTO THE BRAKE AND TORQUED IT PER THE JOB CARD. I THEN SAFETIED THE NUT WITH ITS RETAINING RING AND INSTALLED THE HUB CAP. ON APPROX JUN/XB/97 MY FOREMAN WAS INFORMED THAT A MECH IN XYZ HAD FOUND THE BRAKE NOT ENGAGED IN THE ANTI-ROTATION LUGS ON THE WHEEL. THE TIRE AND BRAKE WERE CHANGED FOR PRECAUTIONARY MEASURES AND THE PLANE RETURNED TO SVC. I WAS INFORMED OF THIS UPON MY RETURN ON JUN/XC/97. TO THE BEST OF MY KNOWLEDGE THE ANTI-ROTATION LUGS WERE ENGAGED AT THE TIME I HAD SIGNED FOR THE WORK COMPLETED. I FOLLOWED THE JOB CARD STEP BY STEP, AND SIGNED FOR WORK COMPLETED.

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.