<< >> NASA ASRS Report 1305704, October 2015

Crp controller observed an uav aircraft that was assigned 3;000 feet descend into the vicinity of another aircraft under his control. Controller observes the uav aircraft climb back up to 3;000. Traffic was issued to all concerned.

Attributes
ACN	1305704
Time
Date	201510
Local Time Of Day	1201-1800
Place
Locale Reference	CRP.TRACON
State Reference	TX
Environment
Light	Daylight
Aircraft 1
Make Model Name	UAV - Unpiloted Aerial Vehicle
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Transport Low Wing 2 Turboprop Eng
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Other Instrument Approach
Flight Plan	IFR
Person 1
Function	Departure Approach
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 15
Events
Anomaly	Conflict Airborne Conflict Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance

Narrative:

Aircraft Y radar identified and vectored for taz RWY31L ngp. Aircraft Z radar identified and vectored ASR RWY31L ngp. Aircraft X released predator 2 departure. Aircraft X radar identified and altitude verified. Aircraft X observed at 3000. Aircraft X observed and verified descending. Aircraft X reports climbing back to 3000. Aircraft X instructed to expedite climb to 3000. Traffic issued to aircraft Z. Aircraft Z reports traffic in sight and aircraft X observed level at 3000.

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Original NASA ASRS Text

Title: CRP Controller observed an UAV aircraft that was assigned 3;000 feet descend into the vicinity of another aircraft under his control. Controller observes the UAV aircraft climb back up to 3;000. Traffic was issued to all concerned.

Narrative: Aircraft Y radar identified and vectored for TAZ RWY31L NGP. Aircraft Z radar identified and vectored ASR RWY31L NGP. Aircraft X released Predator 2 Departure. Aircraft X radar identified and altitude verified. Aircraft X observed at 3000. Aircraft X observed and verified descending. Aircraft X reports climbing back to 3000. Aircraft X instructed to expedite climb to 3000. Traffic issued to aircraft Z. Aircraft Z reports traffic in sight and aircraft X observed level at 3000.

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.