C172 instructor pilot reports a near midair collision with a uav at 1;500 ft just north of jyo.

Attributes
ACN	1198954
Time
Date	201408
Local Time Of Day	0001-0600
Place
Locale Reference	JYO.Airport
State Reference	VA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	Direct
Flight Plan	VFR
Aircraft 2
Make Model Name	UAV - Unpiloted Aerial Vehicle
Person 1
Function	Instructor
Qualification	Flight Crew Commercial Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 70 Flight Crew Total 940 Flight Crew Type 700
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 20 Vertical 0

Narrative:

I was returning from an instructional flight with a student in a cessna 172R and descending out of 1;500 ft MSL for traffic pattern altitude 1;199 ft at jyo airport when a personal quadcopter uav passed us by our left wing within 20 ft at 1;500 ft MSL. We were quite surprised by this and felt safety could have been compromised had this flying device been any closer. The device was between 3-3.5 ft vertical and 2-3 ft in diameter; and looked like a tripod with a fixed rotor attached to the top of it. We filed a report with potomac TRACON for a near miss with a quadcopter. The conditions at the time were good visibility with clear skies and winds calm. We identified the location at 333 radial from aml VOR at 13.7 NM within the 2;500 ft ring of the washington dulles class B airspace.

Original NASA ASRS Text

Title: C172 instructor pilot reports a NMAC with a UAV at 1;500 FT just north of JYO.

Narrative: I was returning from an instructional flight with a student in a Cessna 172R and descending out of 1;500 FT MSL for traffic pattern altitude 1;199 FT at JYO airport when a personal quadcopter UAV passed us by our left wing within 20 FT at 1;500 FT MSL. We were quite surprised by this and felt safety could have been compromised had this flying device been any closer. The device was between 3-3.5 FT vertical and 2-3 FT in diameter; and looked like a tripod with a fixed rotor attached to the top of it. We filed a report with Potomac TRACON for a near miss with a quadcopter. The conditions at the time were good visibility with clear skies and winds calm. We identified the location at 333 radial from AML VOR at 13.7 NM within the 2;500 FT ring of the Washington Dulles Class B airspace.

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.