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Sheet metal technicians report DC9 and B757 nose cowls returned to service with acoustical panel delamination and mount holes worn beyond structural repair manual limits.
| Attributes | |
| ACN | 632345 |
| Time | |
| Date | 200409 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| 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 : 18 |
| ASRS Report | 632345 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 21 |
| ASRS Report | 632356 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : unable |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : scheduled maintenance performance deficiency : repair performance deficiency : logbook entry performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Environmental Factor Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
| Situations | |
| Publication | Structural Repair Manual |
Narrative:
The shop has started a program on DC9 nose cowls. Less than 8000 hours minimal inspection done. Shop not using form generated for DC9 repair. They are not checking for acoustic panel delamination per manual. Cowl returned to service with old acoustical panels and without delamination inspection. Another nose cowl came into the shop unserviceable. Inspector didn't tap test acoustical panels during inspection. Maximum allowable damage 10
Original NASA ASRS Text
Title: SHEET METAL TECHNICIANS RPT DC9 AND B757 NOSE COWLS RETURNED TO SVC WITH ACOUSTICAL PANEL DELAMINATION AND MOUNT HOLES WORN BEYOND STRUCTURAL REPAIR MANUAL LIMITS.
Narrative: THE SHOP HAS STARTED A PROGRAM ON DC9 NOSE COWLS. LESS THAN 8000 HRS MINIMAL INSPECTION DONE. SHOP NOT USING FORM GENERATED FOR DC9 REPAIR. THEY ARE NOT CHKING FOR ACOUSTIC PANEL DELAMINATION PER MANUAL. COWL RETURNED TO SVC WITH OLD ACOUSTICAL PANELS AND WITHOUT DELAMINATION INSPECTION. ANOTHER NOSE COWL CAME INTO THE SHOP UNSERVICEABLE. INSPECTOR DIDN'T TAP TEST ACOUSTICAL PANELS DURING INSPECTION. MAX ALLOWABLE DAMAGE 10
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.