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Technician reported installing a main landing gear side strut assembly backwards; citing unclear documentation.
| Attributes | |
| ACN | 1757267 |
| Time | |
| Date | 201810 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 170/175 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Gear Extend/Retract Mechanism |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Procedural FAR Deviation - Procedural Maintenance |
Narrative:
I was tasked with changing the #200 main landing gear assembly which involves replacing the main side strut assembly. The lower portion of the side strut was found to be installed backwards.an fcd was issued the inspect the fleet for this problem. It was found on a ron.the task is very lengthy; taking more than one shift to complete; and the work card that is used requires you to refer to one of the many figures in the back often or just says refer to the amm. We receive the upper and lower main side strut as a single unit already assembled and cotter pinned from stock. The work card step only indicated; if necessary; invert the articulation nut. It did not specify the need to rotate the lower strut or give any installation procedures. The note regarding the bearing is vague and relies solely on the image given.I was informed it was found while preforming the fcd at another base. Include steps and figures for installing the articulating nut and make it a step on the work card to inspect the orientation of the side strut instead of just a note. Have the assembly come from stock with the nut loose and no safety pre-installed.
Original NASA ASRS Text
Title: Technician reported installing a main landing gear side strut assembly backwards; citing unclear documentation.
Narrative: I was tasked with changing the #200 main landing gear assembly which involves replacing the main side strut assembly. The lower portion of the side strut was found to be installed backwards.An FCD was issued the inspect the fleet for this problem. It was found on a RON.The task is very lengthy; taking more than one shift to complete; and the work card that is used requires you to refer to one of the many figures in the back often or just says refer to the AMM. We receive the upper and lower main side strut as a single unit already assembled and cotter pinned from stock. The work card step only indicated; if necessary; invert the articulation nut. It did not specify the need to rotate the lower strut or give any installation procedures. The note regarding the bearing is vague and relies solely on the image given.I was informed it was found while preforming the FCD at another base. Include steps and figures for installing the articulating nut and make it a step on the work card to inspect the orientation of the side strut instead of just a note. Have the assembly come from stock with the nut loose and no safety pre-installed.
Data retrieved from NASA's ASRS site 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.