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A maintenance technician reported that work accomplished on a turbine disk was not signed-off and it was unknown what procedures were performed.
| Attributes | |
| ACN | 1554863 |
| Time | |
| Date | 201806 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | No Aircraft |
| Component | |
| Aircraft Component | Turbine Assemb Disc |
| Person 1 | |
| Function | Lead Technician |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Maintenance Deviation - Procedural Published Material / Policy |
Narrative:
Static balance low pressure turbine (lpt) 4th stage disk assembly which includes; disk; blades and air seal; was assembled without proper procedures or inspection buybacks. I was lead and reviewed [engine] for work still needing to be accomplished; I found the bladed assembly on the static balance machine with no air seal; yet there was no stamped offs for work completed on the jic (job instruction cards). After further investigation the procedures that have been accomplished or needed to be accomplished was not complete and/or lacking information. Procedures that were performed and/or needed to be performed (open area inspection for air seal) to complete the task was not reflected in the signoffs in the non-routine write ups nor in the job instruction cards.[my suggestion is the] mechanical (safety side) stop assembly correct issue as to following procedures; that is out of my control.
Original NASA ASRS Text
Title: A Maintenance Technician reported that work accomplished on a turbine disk was not signed-off and it was unknown what procedures were performed.
Narrative: Static Balance Low Pressure Turbine (LPT) 4th stage disk assembly which includes; disk; blades and air seal; was assembled without proper procedures or inspection buybacks. I was lead and reviewed [engine] for work still needing to be accomplished; I found the bladed assembly on the static balance machine with no air seal; yet there was no stamped offs for work completed on the JIC (Job Instruction Cards). After further investigation the procedures that have been accomplished or needed to be accomplished was not complete and/or lacking information. Procedures that were performed and/or needed to be performed (open area inspection for air seal) to complete the task was NOT reflected in the signoffs in the non-routine write ups nor in the Job Instruction Cards.[My suggestion is the] mechanical (safety side) stop assembly correct issue as to following procedures; that is out of my control.
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.