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A mechanic reports on the inadequate inspection procedures in their taskcards; that limited their ability to find cracks in the frame station (fs) 640.00 area of the engine support box beam section; using only visual inspection techniques; on their crj-100's.
| Attributes | |
| ACN | 841036 |
| Time | |
| Date | 200906 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Regional Jet CL65 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Powerplant Mounting |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Complied with taskcards to visually inspect certain sections of the engine support box beam for defects in the frame station (fs) 640.00 area. Performed a visual inspection that the taskcard required. Found no defects at the time of the visual inspection. Other maintenance personnel re-inspected both sides again. A defect was found by dye penetrant (inspection); on the right side. I was told by more experienced mechanics; that defect was not visible; or near impossible to see. They had experience on where they crack. They proceeded to (apply) dye penetrant in the area and found the defect on the right side of fs 640.00 area. While repairing the defect on the right side; during engine removal (due to inaccessibility for repair); a defect was noticeable on the left side of the 640.00 area. Myself and other personnel inspected the left side several times and did not visually see any defect until the engine was removed. The engine was 0 loaded; then full weight on the aircraft; then removed; all during the repair to the 640.00 on the right side. At the time I did the visual inspections to both areas; I could not visually see any defects. If other methods are needed to better identify defects in these areas; then they need to be added to the taskcards.
Original NASA ASRS Text
Title: A Mechanic reports on the inadequate inspection procedures in their taskcards; that limited their ability to find cracks in the frame station (FS) 640.00 area of the engine support box beam section; using only visual inspection techniques; on their CRJ-100's.
Narrative: Complied with taskcards to visually inspect certain sections of the engine support box beam for defects in the frame station (fs) 640.00 area. Performed a visual inspection that the taskcard required. Found no defects at the time of the visual inspection. Other maintenance personnel re-inspected both sides again. A defect was found by dye penetrant (inspection); on the right side. I was told by more experienced mechanics; that defect was not visible; or near impossible to see. They had experience on where they crack. They proceeded to (apply) dye penetrant in the area and found the defect on the right side of fs 640.00 area. While repairing the defect on the right side; during engine removal (due to inaccessibility for repair); a defect was noticeable on the left side of the 640.00 area. Myself and other personnel inspected the left side several times and did not visually see any defect until the engine was removed. The engine was 0 loaded; then full weight on the aircraft; then removed; all during the repair to the 640.00 on the right side. At the time I did the visual inspections to both areas; I could not visually see any defects. If other methods are needed to better identify defects in these areas; then they need to be added to the taskcards.
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.