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Three mechanics and one inspector report about the removal and reinstallation of a #5 leading edge slat and proximity sensor targets on the slat auxiliary tracks of a B767-300ER. The inboard and outboard targets had been swapped; causing an in flight stick shaker activation and an air turnback. The maintenance manual and functional tests were found inadequate.
| Attributes | |
| ACN | 933958 |
| Time | |
| Date | 201102 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Leading Edge Slat |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Experience | Maintenance Technician 24 |
| Person 2 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Experience | Maintenance Technician 21 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Myself and another aircraft maintenance technician were issued a task card XXXX to remove the #5 slat off of a B767-300; for [fixed wing] leading edge repairs under the slat. We followed the procedures outlined in the task card for the preparation and removal of #5 slat. We also marked the hardware and put them in parts bags and hung them on the structure where they were removed; for reinstallation when the repairs were completed.we were given the task to perform the functional test of the #5 slat on task card XXXX; item 6. We checked that the paperwork was complete to that point; and we proceeded to perform the required tests of the slat system per the task card instructions. It passed these tests and we sold (verified) this to inspection.we were told of the air turn back more than two weeks later and advised to fill out this NASA form detailing what we accomplished with this particular task card. We were also told what the problem with the air turn back [was] and subsequent repairs to remedy this issue.
Original NASA ASRS Text
Title: Three mechanics and one Inspector report about the removal and reinstallation of a #5 Leading Edge Slat and proximity sensor Targets on the slat Auxiliary tracks of a B767-300ER. The inboard and outboard Targets had been swapped; causing an in flight Stick Shaker activation and an air turnback. The Maintenance Manual and Functional Tests were found inadequate.
Narrative: Myself and another Aircraft Maintenance Technician were issued a Task Card XXXX to remove the #5 Slat off of a B767-300; for [fixed wing] leading edge repairs under the slat. We followed the procedures outlined in the Task Card for the preparation and removal of #5 Slat. We also marked the hardware and put them in parts bags and hung them on the structure where they were removed; for reinstallation when the repairs were completed.We were given the task to perform the Functional Test of the #5 Slat on Task Card XXXX; Item 6. We checked that the paperwork was complete to that point; and we proceeded to perform the required tests of the Slat System per the Task Card instructions. It passed these tests and we sold (verified) this to Inspection.We were told of the air turn back more than two weeks later and advised to fill out this NASA form detailing what we accomplished with this particular Task Card. We were also told what the problem with the air turn back [was] and subsequent repairs to remedy this issue.
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.