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A B737-500 during a 'B' check upper wing fasteners were found corroded and written up by an inspector. Engineering wrote up a repair that was in conflict with the inspector's write-up.
| Attributes | |
| ACN | 628475 |
| Time | |
| Date | 200408 |
| Day | Wed |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-500 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : inspector |
| Qualification | technician : airframe technician : powerplant |
| ASRS Report | 628475 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : engineering procedure contributing factor : work cards performance deficiency : repair performance deficiency : inspection performance deficiency : scheduled maintenance |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Chart Or Publication Aircraft |
| Primary Problem | Chart Or Publication |
| Situations | |
| Publication | Structural Repair Manual |
Narrative:
On aug/wed/04, I was working aircraft X on l-hand wing when I found corrosion on upper surface of wing below overwing exit. I contacted quality control and engineering about the problem. Quality control wrote up nrc. Engineering said to blend until corrosion was removed. Once corrosion was removed engineering and quality control determined that the blended area was out of limits. At that time I was on hold until engineering came back with a revised repair. I then filled out a maintenance form telling what I had done. On the maintenance form I failed to write down that I blended on some fasteners. I didn't think it was important since we needed to open the wing tanks and prepare for a repair and dayshift was informed at turnover about the fasteners by my supervisor and quality control. In the future, we need to document more information and have better communication.
Original NASA ASRS Text
Title: A B737-500 DURING A 'B' CHK UPPER WING FASTENERS WERE FOUND CORRODED AND WRITTEN UP BY AN INSPECTOR. ENGINEERING WROTE UP A REPAIR THAT WAS IN CONFLICT WITH THE INSPECTOR'S WRITE-UP.
Narrative: ON AUG/WED/04, I WAS WORKING ACFT X ON L-HAND WING WHEN I FOUND CORROSION ON UPPER SURFACE OF WING BELOW OVERWING EXIT. I CONTACTED QUALITY CTL AND ENGINEERING ABOUT THE PROB. QUALITY CTL WROTE UP NRC. ENGINEERING SAID TO BLEND UNTIL CORROSION WAS REMOVED. ONCE CORROSION WAS REMOVED ENGINEERING AND QUALITY CTL DETERMINED THAT THE BLENDED AREA WAS OUT OF LIMITS. AT THAT TIME I WAS ON HOLD UNTIL ENGINEERING CAME BACK WITH A REVISED REPAIR. I THEN FILLED OUT A MAINT FORM TELLING WHAT I HAD DONE. ON THE MAINT FORM I FAILED TO WRITE DOWN THAT I BLENDED ON SOME FASTENERS. I DIDN'T THINK IT WAS IMPORTANT SINCE WE NEEDED TO OPEN THE WING TANKS AND PREPARE FOR A REPAIR AND DAYSHIFT WAS INFORMED AT TURNOVER ABOUT THE FASTENERS BY MY SUPVR AND QUALITY CTL. IN THE FUTURE, WE NEED TO DOCUMENT MORE INFO AND HAVE BETTER COM.
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.