General aviation pilot reported a close encounter with a uav while in the landing pattern at phoenix...

Attributes
ACN	1621331
Time
Date	201902
Local Time Of Day	1201-1800
Place
Locale Reference	DVT.Airport
State Reference	AZ
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Small Aircraft Low Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	Landing
Route In Use	Visual Approach
Flight Plan	None
Aircraft 2
Make Model Name	UAV - Unpiloted Aerial Vehicle
Operating Under FAR Part	Other 107
Flight Phase	Other unknown
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Instrument Flight Crew Private
Experience	Flight Crew Last 90 Days 40 Flight Crew Total 460 Flight Crew Type 200
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 100 Vertical 100

Narrative:

On extended right base leg to 25R at dvt; I observed am aircraft; similar to an extra 300; traveling to the west (as though it were on the downwind to [runway] 7L; against the current traffic direction); passing in front of me and slightly above. The aircraft was not in communication with the north tower; which I was in contact with and had directed me to the extended base leg for [runway] 25R. I was a little above traffic pattern altitude at about 2;700 feet as I was still descending; and the other aircraft was slightly above me. As it passed to my right and was off my right wing; it did a half snap roll and descended vertically; and at that time; it was apparent to me that it was a large radio controlled aircraft above the sun valley fliers field just northeast of dvt. At that time; it was also evident that it was a lot closer to me than I had originally estimated; since it was not a full-sized aircraft. I reported this to ATC when it happened since there were other aircraft in the pattern at the time.

Original NASA ASRS Text

Title: General aviation pilot reported a close encounter with a UAV while in the landing pattern at Phoenix Deer Valley Airport.

Narrative: On extended right base leg to 25R at DVT; I observed am aircraft; similar to an Extra 300; traveling to the west (as though it were on the downwind to [Runway] 7L; against the current traffic direction); passing in front of me and slightly above. The aircraft was not in communication with the North Tower; which I was in contact with and had directed me to the extended base leg for [Runway] 25R. I was a little above traffic pattern altitude at about 2;700 feet as I was still descending; and the other aircraft was slightly above me. As it passed to my right and was off my right wing; it did a half snap roll and descended vertically; and at that time; it was apparent to me that it was a large radio controlled aircraft above the Sun Valley Fliers Field just NE of DVT. At that time; it was also evident that it was a lot closer to me than I had originally estimated; since it was not a full-sized aircraft. I reported this to ATC when it happened since there were other aircraft in the pattern at the time.

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.

General aviation pilot reported a close encounter with a uav while in the landing pattern at phoenix deer valley airport.