A B737-700 was dispatched with B737-300 nosewheel and tire assemblies installed.

Attributes
ACN	708606
Time
Date	200607
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : airframe technician : powerplant
ASRS Report	708606
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far
Independent Detector	other other : 2
Resolutory Action	none taken : detected after the fact
Consequence	other other
Factors
Maintenance	performance deficiency : non compliance with legal requirements performance deficiency : scheduled maintenance performance deficiency : logbook entry performance deficiency : installation
Supplementary
Problem Areas	Environmental Factor Maintenance Human Performance Aircraft Chart Or Publication
Primary Problem	Maintenance Human Performance

Narrative:

Tire carts were recently changed over to accommodate the increase in -700's tire right&right's. I can't recall if I grabbed the -300 tire cart by mistake. Regardless; I should have at least doublechked the effectivity on the parts tags or even sidewall identify numbers! Due to time constraints; I guess my attention to detail/situational awareness was not kept in check! We are all up to speed on which carts contain what series of tires based on the color of tire carts! (Memo was issued.) I know that doesn't mean the wrong tires can't be mistakenly placed on them! It is still my responsibility to check effectivity/sidewall identify numbers on tag prior to installation on any aircraft.

Original NASA ASRS Text

Title: A B737-700 WAS DISPATCHED WITH B737-300 NOSEWHEEL AND TIRE ASSEMBLIES INSTALLED.

Narrative: TIRE CARTS WERE RECENTLY CHANGED OVER TO ACCOMMODATE THE INCREASE IN -700'S TIRE R&R'S. I CAN'T RECALL IF I GRABBED THE -300 TIRE CART BY MISTAKE. REGARDLESS; I SHOULD HAVE AT LEAST DOUBLECHKED THE EFFECTIVITY ON THE PARTS TAGS OR EVEN SIDEWALL IDENT NUMBERS! DUE TO TIME CONSTRAINTS; I GUESS MY ATTN TO DETAIL/SITUATIONAL AWARENESS WAS NOT KEPT IN CHK! WE ARE ALL UP TO SPEED ON WHICH CARTS CONTAIN WHAT SERIES OF TIRES BASED ON THE COLOR OF TIRE CARTS! (MEMO WAS ISSUED.) I KNOW THAT DOESN'T MEAN THE WRONG TIRES CAN'T BE MISTAKENLY PLACED ON THEM! IT IS STILL MY RESPONSIBILITY TO CHK EFFECTIVITY/SIDEWALL IDENT NUMBERS ON TAG PRIOR TO INSTALLATION ON ANY ACFT.

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.