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Six mechanics report about their involvement with a series of B757 brake build-ups that were later determined to have incorrect rivets installed holding the brake pads to the brake stators.
| Attributes | |
| ACN | 917659 |
| Time | |
| Date | 201011 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Main Gear |
| Person 1 | |
| Function | Technician |
| Person 2 | |
| Function | Technician |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy |
Narrative:
My job assignment is riveting B757 stators; pressure plates and torque tubes. With brake pads; I am in training and have only been at this assignment for one month. I use an auto-riveter to complete this task. My job is to make sure pressure plates; torque tubes; and stators are flat checked before riveting. I was riveting B757 stators and pads. The machine (auto-riveter) was low on rivets [so] I got the part number from the component maintenance manual (cmm) and went to the parts drawer (bin) and matched the number on the drawer to the number I had and filled the [auto-riveter] hopper.the way the drawers were set up and marked was confusing; I grabbed rivets from the bin (drawer) that I thought was marked with the part number I needed and continued riveting parts. After I rivet the stators; I check for proper seating of the pad onto the stator and check for any loose pads. The rivets that I had grabbed [from the drawer] were the wrong ones; I am still in training and still learning the job. The parts drawer has been changed now so that it is easier to distinguish the right rivet and is easier to identify.
Original NASA ASRS Text
Title: Six mechanics report about their involvement with a series of B757 brake build-ups that were later determined to have incorrect rivets installed holding the brake pads to the brake stators.
Narrative: My job assignment is riveting B757 stators; pressure plates and torque tubes. With brake pads; I am in training and have only been at this assignment for one month. I use an auto-riveter to complete this task. My job is to make sure pressure plates; torque tubes; and stators are flat checked before riveting. I was riveting B757 stators and pads. The machine (auto-riveter) was low on rivets [so] I got the part number from the Component Maintenance Manual (CMM) and went to the parts drawer (bin) and matched the number on the drawer to the number I had and filled the [auto-riveter] hopper.The way the drawers were set up and marked was confusing; I grabbed rivets from the bin (drawer) that I thought was marked with the part number I needed and continued riveting parts. After I rivet the stators; I check for proper seating of the pad onto the stator and check for any loose pads. The rivets that I had grabbed [from the drawer] were the wrong ones; I am still in training and still learning the job. The parts drawer has been changed now so that it is easier to distinguish the right rivet and is easier to identify.
Data retrieved from NASA's ASRS site as of April 2012 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.