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A B767-200 number 1 pylon outboard panel was improperly repaired with a substitute fastener per the structural repair manual. Repair was an engineering authority/authorized prohibiting fastener substitution.
| Attributes | |
| ACN | 715420 |
| Time | |
| Date | 200609 |
| 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 | B767-200 |
| 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 technician : 21 |
| ASRS Report | 715420 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | oversight : supervisor |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance lead technician : 34 |
| ASRS Report | 715302 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : far non adherence : published procedure |
| Independent Detector | other other : 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : work cards contributing factor : engineering procedure performance deficiency : non compliance with legal requirements performance deficiency : scheduled maintenance performance deficiency : repair performance deficiency : installation performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Environmental Factor Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
On sep/tue/06; I was asked to come help a fellow technician with aircraft X. There was a missing fastener on left engine outboard pylon that they wanted me to replace; for which I was given screws; washers; and nuts; while they worked a similar problem on the right engine pylon. I replaced screw and the nut plate was missing. I substituted a washer and nut for nut plate since nut plate could not be replaced without removing a large panel. This is generally permitted within srm fastener substitution section and fastener substitution engineering change/repair authority/authorized. I was not told that aircraft was being repaired from engineering change repair authority/authorized that prohibited fastener substitution. I was also not involved in signoff of logbook.
Original NASA ASRS Text
Title: A B767-200 NUMBER 1 PYLON OUTBOARD PANEL WAS IMPROPERLY REPAIRED WITH A SUBSTITUTE FASTENER PER THE STRUCTURAL REPAIR MANUAL. REPAIR WAS AN ENGINEERING AUTH PROHIBITING FASTENER SUBSTITUTION.
Narrative: ON SEP/TUE/06; I WAS ASKED TO COME HELP A FELLOW TECHNICIAN WITH ACFT X. THERE WAS A MISSING FASTENER ON L ENG OUTBOARD PYLON THAT THEY WANTED ME TO REPLACE; FOR WHICH I WAS GIVEN SCREWS; WASHERS; AND NUTS; WHILE THEY WORKED A SIMILAR PROB ON THE R ENG PYLON. I REPLACED SCREW AND THE NUT PLATE WAS MISSING. I SUBSTITUTED A WASHER AND NUT FOR NUT PLATE SINCE NUT PLATE COULD NOT BE REPLACED WITHOUT REMOVING A LARGE PANEL. THIS IS GENERALLY PERMITTED WITHIN SRM FASTENER SUBSTITUTION SECTION AND FASTENER SUBSTITUTION ENGINEERING CHANGE/REPAIR AUTH. I WAS NOT TOLD THAT ACFT WAS BEING REPAIRED FROM ENGINEERING CHANGE REPAIR AUTH THAT PROHIBITED FASTENER SUBSTITUTION. I WAS ALSO NOT INVOLVED IN SIGNOFF OF LOGBOOK.
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.