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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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| Attributes | |
| ACN | 1675688 |
| Time | |
| Date | 201908 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ORD.Airport |
| State Reference | IL |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Speedbrake/Spoiler |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Person 2 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Maintenance Deviation - Procedural Published Material / Policy |
Narrative:
[Mechanic] and myself were working on aircraft X. We were doing an initial evaluation on the right wing inboard spoiler actuator leaking at return line b-nut; we did not know what we had so we raised the spoilers and placed a rubber chock under the spoiler. We didn't know if the spoilers would lose pressure because of the leak; we did not want the spoiler to close while we were tightening the b-nut. I went up to the flight deck to turn off the hydraulics. Out of habit; I put the speed brake handle down; and then turned off the hydraulics. The damage was done.
Original NASA ASRS Text
Title: Maintenance Technician reported inadvertently activating spoilers while a rubber chock was in place; damaging the spoiler.
Narrative: [Mechanic] and myself were working on Aircraft X. We were doing an initial evaluation on the right wing inboard spoiler actuator leaking at return line b-nut; we did not know what we had so we raised the spoilers and placed a rubber chock under the spoiler. We didn't know if the spoilers would lose pressure because of the leak; we did not want the spoiler to close while we were tightening the b-nut. I went up to the flight deck to turn off the hydraulics. Out of habit; I put the speed brake handle down; and then turned off the hydraulics. The damage was done.
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.