Three mechanics describe their involvement with an external fuselage skin and stringer repair on a B777-200 aircraft; just aft of main cabin entry door 1-LEFT.

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Attributes
ACN	786247
Time
Date	200804
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B777-200
Operating Under FAR Part	Part 121
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : powerplant technician : airframe
Experience	maintenance technician : 5
ASRS Report	786247
Person 2
Affiliation	company : air carrier
Function	maintenance : lead technician
Qualification	technician : powerplant technician : airframe
Experience	maintenance lead technician : 22
ASRS Report	786248
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Independent Detector	other other : 1 other other : 2 other other : 3
Resolutory Action	none taken : detected after the fact
Consequence	other other
Factors
Maintenance	performance deficiency : installation performance deficiency : inspection performance deficiency : non compliance with legal requirements performance deficiency : repair
Supplementary
Problem Areas	Maintenance Human Performance Aircraft
Primary Problem	Maintenance Human Performance

Narrative:

As to the best of my memory I remember my lead had assigned me to fabricate doubler and filler. So I fabricated and prepared doubler and filler following srm procedures and not seeing any elongated holes on the stringer after the fabrication and prepping was completed. Then I got an ok to install from quality control. Supplemental information from acn 786248: to my best recollection; I came to work overtime. My turnover was repair splice is complete and it needs quality control buyback. Supplemental information from acn 786246: I had started to work overtime at XA00 on the aircraft. The patch was 90% done. I had finished up installing the fasteners under the tight areas not on the stringer. I don't remember seeing any elongated holes or anything wrong with the repair. After completing the repair; inspection and myself had inspected the repair. After the repair was done; neither myself nor inspection found any discrepancies on the repair. Then the repair was signed off.

Original NASA ASRS Text

Title: THREE MECHANICS DESCRIBE THEIR INVOLVEMENT WITH AN EXTERNAL FUSELAGE SKIN AND STRINGER REPAIR ON A B777-200 ACFT; JUST AFT OF MAIN CABIN ENTRY DOOR 1-LEFT.

Narrative: AS TO THE BEST OF MY MEMORY I REMEMBER MY LEAD HAD ASSIGNED ME TO FABRICATE DOUBLER AND FILLER. SO I FABRICATED AND PREPARED DOUBLER AND FILLER FOLLOWING SRM PROCS AND NOT SEEING ANY ELONGATED HOLES ON THE STRINGER AFTER THE FABRICATION AND PREPPING WAS COMPLETED. THEN I GOT AN OK TO INSTALL FROM QUALITY CTL. SUPPLEMENTAL INFO FROM ACN 786248: TO MY BEST RECOLLECTION; I CAME TO WORK OVERTIME. MY TURNOVER WAS REPAIR SPLICE IS COMPLETE AND IT NEEDS QUALITY CTL BUYBACK. SUPPLEMENTAL INFO FROM ACN 786246: I HAD STARTED TO WORK OVERTIME AT XA00 ON THE ACFT. THE PATCH WAS 90% DONE. I HAD FINISHED UP INSTALLING THE FASTENERS UNDER THE TIGHT AREAS NOT ON THE STRINGER. I DON'T REMEMBER SEEING ANY ELONGATED HOLES OR ANYTHING WRONG WITH THE REPAIR. AFTER COMPLETING THE REPAIR; INSPECTION AND MYSELF HAD INSPECTED THE REPAIR. AFTER THE REPAIR WAS DONE; NEITHER MYSELF NOR INSPECTION FOUND ANY DISCREPANCIES ON THE REPAIR. THEN THE REPAIR WAS SIGNED OFF.

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.