Flight instructor reported sighting a drone while on an instructional flight at 4500 feet.

Attributes
ACN	1573186
Time
Date	201808
Local Time Of Day	1201-1800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Flight Plan	None
Person 1
Function	Instructor Pilot Not Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Commercial Flight Crew Flight Instructor
Experience	Flight Crew Total 8000
Events
Anomaly	Inflight Event / Encounter Other / Unknown
Miss Distance	Horizontal 2000 Vertical 200

Narrative:

We saw a medium sized object perhaps 100-300 feet below us; we were at 4;500 feet MSL too small to be a plane. At first we thought balloons; but that didn't make sense with its track over the ground. It was headed into the wind fairly quickly. My student and I believed it was a drone of some type. There are no current [uav] NOTAMS in the area we were operating. It was green; black; and silver in color. It had the appearance of a quad copter.

Original NASA ASRS Text

Title: Flight instructor reported sighting a drone while on an instructional flight at 4500 feet.

Narrative: We saw a medium sized object perhaps 100-300 feet below us; we were at 4;500 feet MSL too small to be a plane. At first we thought balloons; but that didn't make sense with its track over the ground. It was headed into the wind fairly quickly. My student and I believed it was a drone of some type. There are no current [UAV] NOTAMS in the area we were operating. It was green; black; and silver in color. It had the appearance of a quad copter.

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.