<< >> NASA ASRS Report 803607, September 2008

Mechanic reports he unknowingly installed a borrowed hgs computer on a B737-800 and upgraded the category status for the aircraft without making a log book entry.

Attributes
ACN	803607
Time
Date	200809
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-800
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	803607
Events
Anomaly	aircraft equipment problem : critical non adherence : published procedure non adherence : far
Independent Detector	other other : 1
Resolutory Action	none taken : detected after the fact
Consequence	other
Factors
Maintenance	contributing factor : manuals contributing factor : non availability of parts contributing factor : briefing performance deficiency : scheduled maintenance performance deficiency : testing performance deficiency : non compliance with legal requirements performance deficiency : logbook entry
Supplementary
Problem Areas	Chart Or Publication Maintenance Human Performance Aircraft
Primary Problem	Chart Or Publication

Narrative:

I had no knowledge that the part was borrowed; or any idea that the part was a borrowed part. I changed out an hgs computer on aircraft X log page entry with correct part number and upgraded the aircraft afterwards log page entry. But now it turns out that the part I installed on the aircraft was a borrowed part; which I had no knowledge of when I installed the hgs computer. Maintenance control; my lead; my supervisor; the part; nor the aircraft paperwork informed me to the fact that the part was borrowed. So in the end; I did not make a borrowed part log page entry and I upgraded the aircraft with a borrowed part.

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Original NASA ASRS Text

Title: MECHANIC REPORTS HE UNKNOWINGLY INSTALLED A BORROWED HGS COMPUTER ON A B737-800 AND UPGRADED THE CATEGORY STATUS FOR THE ACFT WITHOUT MAKING A LOG BOOK ENTRY.

Narrative: I HAD NO KNOWLEDGE THAT THE PART WAS BORROWED; OR ANY IDEA THAT THE PART WAS A BORROWED PART. I CHANGED OUT AN HGS COMPUTER ON ACFT X LOG PAGE ENTRY WITH CORRECT PART NUMBER AND UPGRADED THE ACFT AFTERWARDS LOG PAGE ENTRY. BUT NOW IT TURNS OUT THAT THE PART I INSTALLED ON THE ACFT WAS A BORROWED PART; WHICH I HAD NO KNOWLEDGE OF WHEN I INSTALLED THE HGS COMPUTER. MAINT CTL; MY LEAD; MY SUPVR; THE PART; NOR THE ACFT PAPERWORK INFORMED ME TO THE FACT THAT THE PART WAS BORROWED. SO IN THE END; I DID NOT MAKE A BORROWED PART LOG PAGE ENTRY AND I UPGRADED THE ACFT WITH A BORROWED PART.

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