Narrative:

I mistakenly flew the pattern for runway 1; while making radio calls for runway 19. Another plane was in the pattern for runway 19. Both traffic patterns are on same side of runway (left traffic for 19; right traffic for 1). As such; the other plane and I passed each other at the same altitude; going opposite direction; about 200 feet apart. I was clearly too fatigued and not concentrating sufficiently on the flight. I regret this close call and will be much more focused from now on.

Google
 

Original NASA ASRS Text

Title: C172 pilot reports a NMAC with another pilot in the traffic pattern due to mistakenly entering right traffic for Runway 1 while attempting to join left traffic for Runway 19.

Narrative: I mistakenly flew the pattern for Runway 1; while making radio calls for Runway 19. Another plane was in the pattern for Runway 19. Both traffic patterns are on same side of Runway (left traffic for 19; right traffic for 1). As such; the other plane and I passed each other at the same altitude; going opposite direction; about 200 feet apart. I was clearly too fatigued and not concentrating sufficiently on the flight. I regret this close call and will be much more focused from now on.

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.