Crp TRACON controller reports of an aircraft that climbed almost to assigned altitude; but then was ...

Attributes
ACN	1198754
Time
Date	201408
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	Climb
Flight Plan	IFR
Person 1
Function	Departure
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 18
Events
Anomaly	Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Inflight Event / Encounter Weather / Turbulence

Narrative:

I took the position with aircraft X (uav) being released from navy corpus christ; [XXX1] departure; climbing to FL030. Aircraft departed; and I observed him climb to FL027. I restored automatic releases to ngp tower. Then I saw aircraft X descending and turning south. I observed aircraft X's mode C indicate FL015. No response to radio calls. I called ngp tower and canceled automatic releases. Re-established radio communication with aircraft X and pilot advised he had maneuvered and descended to avoid clouds. Aircraft X was then climbed to FL150. Aircraft X then advised he was working on his 2nd radio; and would hold until it was ready. Aircraft X was still holding at time of my relief. Pilot of aircraft X should request a turn/altitude descent.

Original NASA ASRS Text

Title: CRP TRACON Controller reports of an aircraft that climbed almost to assigned altitude; but then was observed descending 1;200 FT below observed altitude due to weather.

Narrative: I took the position with Aircraft X (UAV) being released from Navy Corpus Christ; [XXX1] departure; climbing to FL030. Aircraft departed; and I observed him climb to FL027. I restored automatic releases to NGP Tower. Then I saw Aircraft X descending and turning south. I observed Aircraft X's Mode C indicate FL015. No response to radio calls. I called NGP Tower and canceled automatic releases. Re-established radio communication with Aircraft X and pilot advised he had maneuvered and descended to avoid clouds. Aircraft X was then climbed to FL150. Aircraft X then advised he was working on his 2nd radio; and would hold until it was ready. Aircraft X was still holding at time of my relief. Pilot of Aircraft X should request a turn/altitude descent.

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.

Crp TRACON controller reports of an aircraft that climbed almost to assigned altitude; but then was observed descending 1;200 ft below observed altitude due to weather.