<< >> NASA ASRS Report 488246, October 2000

A B767-300 was dispatched in non compliance with a B767-300ER tire and wheel assembly installed in the #8 position.

Attributes
ACN	488246
Time
Date	200010
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	ground : parked ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : powerplant technician : airframe
Experience	maintenance technician : 9
ASRS Report	488246
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : airframe technician : powerplant
Events
Anomaly	aircraft equipment problem : less severe maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Independent Detector	other other : person 1
Resolutory Action	none taken : unable
Consequence	other
Factors
Maintenance	contributing factor : manuals contributing factor : schedule pressure performance deficiency : inspection performance deficiency : installation performance deficiency : scheduled maintenance
Supplementary
Problem Areas	Aircraft Chart Or Publication Company Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

On oct/thu/00, during a routine inspection, the #8 main tire was found wtl (worn to limits). During this down time, the wheel assembly was changed and replaced with a B767-300ER wheel assembly (part number dcba) instead of a domestic wheel assembly (part number abcd). Noticing the difference before installation, the tire part numbers and ply rating was compared with the opposite and corresponding tires on the aircraft and found to be the same. The wheel assemblies were swapped at this time again noting the difference in assembly part numbers. The maintenance manual was the reference of choice and only the difference in brakes and their inspection was part of the main gear wheel and tire removal/installation. The aircraft left ZZZ on oct/fri/00, meanwhile a setup was installed in the computer by maintenance control to rechange the #8 main wheel assembly at the next stop in salt lake city, in which the aircraft took no delay, no cancellation, and no accident was reported. Aircraft ship #xyz.

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Original NASA ASRS Text

Title: A B767-300 WAS DISPATCHED IN NON COMPLIANCE WITH A B767-300ER TIRE AND WHEEL ASSEMBLY INSTALLED IN THE #8 POS.

Narrative: ON OCT/THU/00, DURING A ROUTINE INSPECTION, THE #8 MAIN TIRE WAS FOUND WTL (WORN TO LIMITS). DURING THIS DOWN TIME, THE WHEEL ASSEMBLY WAS CHANGED AND REPLACED WITH A B767-300ER WHEEL ASSEMBLY (PART NUMBER DCBA) INSTEAD OF A DOMESTIC WHEEL ASSEMBLY (PART NUMBER ABCD). NOTICING THE DIFFERENCE BEFORE INSTALLATION, THE TIRE PART NUMBERS AND PLY RATING WAS COMPARED WITH THE OPPOSITE AND CORRESPONDING TIRES ON THE ACFT AND FOUND TO BE THE SAME. THE WHEEL ASSEMBLIES WERE SWAPPED AT THIS TIME AGAIN NOTING THE DIFFERENCE IN ASSEMBLY PART NUMBERS. THE MAINT MANUAL WAS THE REF OF CHOICE AND ONLY THE DIFFERENCE IN BRAKES AND THEIR INSPECTION WAS PART OF THE MAIN GEAR WHEEL AND TIRE REMOVAL/INSTALLATION. THE ACFT LEFT ZZZ ON OCT/FRI/00, MEANWHILE A SETUP WAS INSTALLED IN THE COMPUTER BY MAINT CTL TO RECHANGE THE #8 MAIN WHEEL ASSEMBLY AT THE NEXT STOP IN SALT LAKE CITY, IN WHICH THE ACFT TOOK NO DELAY, NO CANCELLATION, AND NO ACCIDENT WAS RPTED. ACFT SHIP #XYZ.

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.