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A uav technician reported that the pitch controller was moved with the rig pin still installed.
| Attributes | |
| ACN | 1529567 |
| Time | |
| Date | 201803 |
| Local Time Of Day | 0601-1200 |
| Aircraft 1 | |
| Make Model Name | UAV - Unpiloted Aerial Vehicle |
| Component | |
| Aircraft Component | Propeller Pitch Change Mechanism |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Experience | Maintenance Technician 25 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy |
Narrative:
While preforming propeller blade angle rigging; a movement of the power lever was commanded by maintenance technician 1 at the aircraft via radio to maintenance technician 2 in the ground control station. Not realizing a rig pin was installed in the propeller pitch controller; ppc; by maintenance technical 3; the power servo sheered the compass mount out of rig with the ppc housing. Though the ppc unit was not damaged the rigging compass mounted to the ppc was damaged requiring the replacement of the entire ppc. It was my perception as technician 1 that communication with technician 3 was not good and by the time I made the request to move the power lever it was too late to remove the rig pin and prevent the damage; with great force the rig pin was removed.
Original NASA ASRS Text
Title: A UAV Technician reported that the pitch controller was moved with the rig pin still installed.
Narrative: While preforming propeller blade angle rigging; a movement of the power lever was commanded by maintenance technician 1 at the aircraft via radio to maintenance technician 2 in the Ground Control Station. Not realizing a rig pin was installed in the Propeller Pitch Controller; PPC; by maintenance technical 3; the power servo sheered the compass mount out of rig with the PPC housing. Though the PPC unit was not damaged the rigging compass mounted to the PPC was damaged requiring the replacement of the entire PPC. It was my perception as technician 1 that communication with technician 3 was not good and by the time I made the request to move the power lever it was too late to remove the rig pin and prevent the damage; with great force the rig pin was removed.
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.