SR20 pilot reported near midair collision with uav while on approach.

Narrative:

I was on descent into gainesville on final for runway 5; I was approximately 400 feet above the ground and noticed what could've been a drone pass within about 300 feet of my left wing. At the time; I was under a very high task load because I was on short final preparing to land in an aircraft that is still very new to me so I was being extremely cautious to ensure all checklist items and what not were complete and maintaining the proper speeds altitudes and aircraft configurations. What I saw was out of the corner of my eye and I am not 100% sure that it was a drone and that is why I didn't make a report to ATC. I didn't put much thought into it because of being on short final. I continued the approach and landed under normal conditions. During the roll out; ATC issued nonstandard taxi directions so that occupied my mind and I didn't think much more of my encounter until well after the fact the next day when I was talking with another coworker about it. I would suggest just being more aware on short final and that low to the ground of any object that could potentially be a hazard to flight safety and to alert ATC to the issue even though I didn't know what the exact object was so that they knew and could warn other aircraft.

Original NASA ASRS Text

Title: SR20 pilot reported NMAC with UAV while on approach.

Narrative: I was on descent into Gainesville on final for Runway 5; I was approximately 400 feet above the ground and noticed what could've been a drone pass within about 300 feet of my left wing. At the time; I was under a very high task load because I was on short final preparing to land in an aircraft that is still very new to me so I was being extremely cautious to ensure all checklist items and what not were complete and maintaining the proper speeds altitudes and aircraft configurations. What I saw was out of the corner of my eye and I am not 100% sure that it was a drone and that is why I didn't make a report to ATC. I didn't put much thought into it because of being on short final. I continued the approach and landed under normal conditions. During the roll out; ATC issued nonstandard taxi directions so that occupied my mind and I didn't think much more of my encounter until well after the fact the next day when I was talking with another coworker about it. I would suggest just being more aware on short final and that low to the ground of any object that could potentially be a hazard to flight safety and to alert ATC to the issue even though I didn't know what the exact object was so that they knew and could warn other aircraft.

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.

Attributes
ACN	1648868
Time
Date	201905
Local Time Of Day	1201-1800
Place
Locale Reference	GNV.Airport
State Reference	FL
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	SR20
Operating Under FAR Part	Part 91
Flight Phase	Initial Approach
Route In Use	Visual Approach VFR Route
Flight Plan	VFR
Person 1
Function	Pilot Flying
Qualification	Flight Crew Flight Instructor Flight Crew Commercial
Events
Anomaly	Conflict NMAC Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 300 Vertical 0