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A maintenance inspector reported that the front engine mounts did not have washers installed.
| Attributes | |
| ACN | 1477782 |
| Time | |
| Date | 201708 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Powerplant Mounting |
| Person 1 | |
| Function | Inspector Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy |
Narrative:
I was working line maintenance and the aircraft was just in the early stages of right engine change. Mechanics were putting the new engine under wing when I informed them that we needed to check the run on torque of the barrel nuts first. We found one bad and had to change it; then I was not needed until they were close to full up with the engine. So mechanics torqued aft engine mount bolts and then moved to forward mount. I stood out by the c-duct since two mechanics were under the c-ducts to accomplish the torques.just got complacent; normally the new bolts are always used and checked for the run on torques. Then they have the anti-seize applied along with washer; sitting there ready.the aft mount bolts were put on first and they had the washers; but two mechanics did the aft and two other mechanics did the front. Again; just got complacent after aft mount bolts installed correctly and didn't double check for washers on the front mount installation.
Original NASA ASRS Text
Title: A Maintenance Inspector reported that the front engine mounts did not have washers installed.
Narrative: I was working line maintenance and the aircraft was just in the early stages of right engine change. Mechanics were putting the new engine under wing when I informed them that we needed to check the run on torque of the barrel nuts first. We found one bad and had to change it; then I was not needed until they were close to full up with the engine. So mechanics torqued aft engine mount bolts and then moved to forward mount. I stood out by the C-duct since two mechanics were under the C-ducts to accomplish the torques.Just got complacent; normally the new bolts are always used and checked for the run on torques. Then they have the anti-seize applied along with washer; sitting there ready.The aft mount bolts were put on first and they had the washers; but two mechanics did the aft and two other mechanics did the front. Again; just got complacent after aft mount bolts installed correctly and didn't double check for washers on the front mount installation.
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.