 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An engine compressor disc attached part was inadvertently flame sprayed and reported incorrectly to the manufacturer for service approval.
| Attributes | |
| ACN | 475440 |
| Time | |
| Date | 200006 |
| Day | Wed |
| 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 | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| ASRS Report | 475440 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure |
| Independent Detector | other other : person 1 |
| Resolutory Action | other |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : engineering procedure performance deficiency : repair performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Company |
| Primary Problem | Maintenance Human Performance |
Narrative:
This part was sent to vendor for repair of an attached component (wxvx). Vendor over sprayed an area on the wvwv forward of stage 4 on the seal fins. The damage was reported by vendor to air carrier engineering as being on the 3RD stage knife edge (wrong area). A technical variation request was made from this erroneous report and was submitted to rolls-royce. A technical variation was granted. When the mistake was found a 2ND technical variation request was made (feb/fri/00) and submitted for the correct area and was also granted. A notice of corrective revision was generated later (jun/tue/00) by me to accompany this technical variation.
Original NASA ASRS Text
Title: AN ENG COMPRESSOR DISC ATTACHED PART WAS INADVERTENTLY FLAME SPRAYED AND RPTED INCORRECTLY TO THE MANUFACTURER FOR SVC APPROVAL.
Narrative: THIS PART WAS SENT TO VENDOR FOR REPAIR OF AN ATTACHED COMPONENT (WXVX). VENDOR OVER SPRAYED AN AREA ON THE WVWV FORWARD OF STAGE 4 ON THE SEAL FINS. THE DAMAGE WAS RPTED BY VENDOR TO ACR ENGINEERING AS BEING ON THE 3RD STAGE KNIFE EDGE (WRONG AREA). A TECHNICAL VARIATION REQUEST WAS MADE FROM THIS ERRONEOUS RPT AND WAS SUBMITTED TO ROLLS-ROYCE. A TECHNICAL VARIATION WAS GRANTED. WHEN THE MISTAKE WAS FOUND A 2ND TECHNICAL VARIATION REQUEST WAS MADE (FEB/FRI/00) AND SUBMITTED FOR THE CORRECT AREA AND WAS ALSO GRANTED. A NOTICE OF CORRECTIVE REVISION WAS GENERATED LATER (JUN/TUE/00) BY ME TO ACCOMPANY THIS TECHNICAL VARIATION.
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.