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Mq-1C uav operator reported losing ground link with the aircraft for approximately 3 minutes; during which time the uav deviated about 1;500 ft from assigned altitude.
| Attributes | |
| ACN | 1226425 |
| Time | |
| Date | 201412 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | UAV - Unpiloted Aerial Vehicle |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Route In Use | Direct |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Not Flying |
| Qualification | Flight Crew Private Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 150 Flight Crew Total 1000 Flight Crew Type 1000 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance |
Narrative:
We were transferring control of a uav from one ground control station to another ground control station. The mq-1C was level at FL200 in a counter clockwise loiter in [restricted area]. In the process of the hand off communication was lost with the uav. The aircraft conducted the pre planned lost link mission and proceeded to the southern edge of [restricted area] at 11;000 MSL. The aircraft remained in lost link for approximately 3 minutes before link was re-established and aircraft was commanded to FL200. During the lost link emergency event the aircraft deviated from assigned altitude approximately 1;500 feet.
Original NASA ASRS Text
Title: MQ-1C UAV operator reported losing ground link with the aircraft for approximately 3 minutes; during which time the UAV deviated about 1;500 FT from assigned altitude.
Narrative: We were transferring control of a UAV from one ground control station to another ground control station. The MQ-1C was level at FL200 in a counter clockwise loiter in [restricted area]. In the process of the hand off communication was lost with the UAV. The aircraft conducted the pre planned lost link mission and proceeded to the southern edge of [restricted area] at 11;000 MSL. The aircraft remained in lost link for approximately 3 minutes before link was re-established and aircraft was commanded to FL200. During the lost link emergency event the aircraft deviated from assigned altitude approximately 1;500 feet.
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.