A B737-700 was dispatched with the incorrect nose landing gear wheel and tire assemblies installed.

Attributes
ACN	724019
Time
Date	200701
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : powerplant technician : airframe
ASRS Report	724019
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far
Independent Detector	other other : 3
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : work cards performance deficiency : installation performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : scheduled maintenance
Supplementary
Problem Areas	Maintenance Human Performance Environmental Factor Chart Or Publication Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

The tires used on this aircraft were the wrong effectivity. These tires were on a tire cart that was brought to the aircraft by another employee. The tires were installed and I didn't notice the B-300/-500 on the serviceable parts tag. Up to this point; I didn't realize the B-700 wheels had the 'identification' tags. I did read the technician notice; but did not understand it completely at the time. I have since reviewed the technician notice to become clear of its intentions. I have since looked at the tires in stock to physically see the differences. With this knowledge now completely clear; I will ensure this doesn't happen again and I can point this out when working with a new employee. One thing that may have caught my attention to prevent this is that if the tag number for the B-300/-500 started with a 3 and the tag number for the B-700 started with a 7.

Original NASA ASRS Text

Title: A B737-700 WAS DISPATCHED WITH THE INCORRECT NOSE LNDG GEAR WHEEL AND TIRE ASSEMBLIES INSTALLED.

Narrative: THE TIRES USED ON THIS ACFT WERE THE WRONG EFFECTIVITY. THESE TIRES WERE ON A TIRE CART THAT WAS BROUGHT TO THE ACFT BY ANOTHER EMPLOYEE. THE TIRES WERE INSTALLED AND I DIDN'T NOTICE THE B-300/-500 ON THE SERVICEABLE PARTS TAG. UP TO THIS POINT; I DIDN'T REALIZE THE B-700 WHEELS HAD THE 'ID' TAGS. I DID READ THE TECHNICIAN NOTICE; BUT DID NOT UNDERSTAND IT COMPLETELY AT THE TIME. I HAVE SINCE REVIEWED THE TECHNICIAN NOTICE TO BECOME CLR OF ITS INTENTIONS. I HAVE SINCE LOOKED AT THE TIRES IN STOCK TO PHYSICALLY SEE THE DIFFERENCES. WITH THIS KNOWLEDGE NOW COMPLETELY CLR; I WILL ENSURE THIS DOESN'T HAPPEN AGAIN AND I CAN POINT THIS OUT WHEN WORKING WITH A NEW EMPLOYEE. ONE THING THAT MAY HAVE CAUGHT MY ATTN TO PREVENT THIS IS THAT IF THE TAG NUMBER FOR THE B-300/-500 STARTED WITH A 3 AND THE TAG NUMBER FOR THE B-700 STARTED WITH A 7.

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