An MD80 was dispatched after a main wheel and tire installation. Technicians involved were unsure if axle nut lock screw was safetied. Down-line check found screw safetied.

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Attributes
ACN	632610
Time
Date	200409
Day	Thu
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	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : powerplant technician : airframe
Experience	maintenance avionics : 23 maintenance technician : 23
ASRS Report	632610
Person 2
Affiliation	company : air carrier
Qualification	technician : powerplant technician : airframe
Experience	maintenance avionics : 16 maintenance technician : 16
ASRS Report	632605
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation non adherence : far non adherence : published procedure
Independent Detector	other other : 3
Resolutory Action	other
Consequence	other other Other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : inspection performance deficiency : non compliance with legal requirements
Supplementary
Problem Areas	Aircraft Chart Or Publication Maintenance Human Performance
Primary Problem	Maintenance Human Performance

Narrative:

This event occurred as the result of an inspection of the #1 main wheel and brake assembly due to smoke coming from the #1 axle after taxi in to gate in ZZZ. After the inspection was completed and the necessary maintenance action taken the aircraft was returned to service. After the aircraft had departed ZZZ, the amt that performed the work and the amt that inspected the work realized that they were unsure if the locking screws for the #1 main wheel axle nut had been safety wired. The air carrier was notified as soon as the possibility of a mistake was realized. The air carrier had the aircraft reinspected to ensure that the #1 axle nut locking screws were secured and safetied. The only prevention for this type of event is to pay closer attention to detail, aircraft maintenance manuals and inspection procedures.

Original NASA ASRS Text

Title: AN MD80 WAS DISPATCHED AFTER A MAIN WHEEL AND TIRE INSTALLATION. TECHNICIANS INVOLVED WERE UNSURE IF AXLE NUT LOCK SCREW WAS SAFETIED. DOWN-LINE CHK FOUND SCREW SAFETIED.

Narrative: THIS EVENT OCCURRED AS THE RESULT OF AN INSPECTION OF THE #1 MAIN WHEEL AND BRAKE ASSEMBLY DUE TO SMOKE COMING FROM THE #1 AXLE AFTER TAXI IN TO GATE IN ZZZ. AFTER THE INSPECTION WAS COMPLETED AND THE NECESSARY MAINT ACTION TAKEN THE ACFT WAS RETURNED TO SVC. AFTER THE ACFT HAD DEPARTED ZZZ, THE AMT THAT PERFORMED THE WORK AND THE AMT THAT INSPECTED THE WORK REALIZED THAT THEY WERE UNSURE IF THE LOCKING SCREWS FOR THE #1 MAIN WHEEL AXLE NUT HAD BEEN SAFETY WIRED. THE ACR WAS NOTIFIED AS SOON AS THE POSSIBILITY OF A MISTAKE WAS REALIZED. THE ACR HAD THE ACFT REINSPECTED TO ENSURE THAT THE #1 AXLE NUT LOCKING SCREWS WERE SECURED AND SAFETIED. THE ONLY PREVENTION FOR THIS TYPE OF EVENT IS TO PAY CLOSER ATTN TO DETAIL, ACFT MAINT MANUALS AND INSPECTION PROCS.

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.