Pilot reported a near mid air collision with another aircraft while on final approach.

Attributes
ACN	1724999
Time
Date	202002
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	None
Aircraft 2
Make Model Name	Cessna 150
Operating Under FAR Part	Part 91
Flight Phase	Other Traffic Pattern
Route In Use	Visual Approach
Person 1
Function	Pilot Not Flying
Qualification	Flight Crew Flight Instructor Flight Crew Commercial
Experience	Flight Crew Last 90 Days 60 Flight Crew Total 580 Flight Crew Type 565
Events
Anomaly	Conflict NMAC Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 300 Vertical 0

Narrative:

After entering left downwind runway xx ZZZ; aircraft Y was seen approaching the airport from the north. When I was abeam runway xx approach end; aircraft Y was traveling southbound; approaching my aircraft head-on; co-altitude; and had made no radio calls. Aircraft Y then turned eastbound and reentered the pattern behind my aircraft. I made standard radio calls while in the pattern. I estimate that the other aircraft came within 300 ft. Nose-to-nose from my aircraft. I did not have to maneuver and was able to maintain my downwind track.

Original NASA ASRS Text

Title: Pilot reported a near mid air collision with another aircraft while on final approach.

Narrative: After entering left downwind Runway XX ZZZ; Aircraft Y was seen approaching the airport from the North. When I was abeam Runway XX approach end; Aircraft Y was traveling southbound; approaching my aircraft head-on; co-altitude; and had made no radio calls. Aircraft Y then turned eastbound and reentered the pattern behind my aircraft. I made standard radio calls while in the pattern. I estimate that the other aircraft came within 300 ft. nose-to-nose from my aircraft. I did not have to maneuver and was able to maintain my downwind track.

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.