Narrative:

I was conducting touch-and-go's with a flight instructor friend. Both I and aircraft Y were making radio calls. There were two other aircraft in the pattern as well as skydivers landing at the airport. During my second touch-and-go; aircraft Y entered the pattern directly below me from a 45-degree entry to the left downwind for runway 21. My friend noticed traffic advisory alerts on an ipad running foreflight that alerted us to the proximity. I maneuvered out of the pattern away from the runway to create space. Aircraft Y appeared to have no notice of my presence above him/her. Aircraft Y appeared on my right side (outside the pattern); disappeared under my ercoupe; and reappeared on my left (inside the pattern from me).

Google
 

Original NASA ASRS Text

Title: Pilot reported an NMAC event during landing practice with a nonreporting aircraft entered the landing pattern.

Narrative: I was conducting touch-and-go's with a flight instructor friend. Both I and Aircraft Y were making radio calls. There were two other aircraft in the pattern as well as skydivers landing at the airport. During my second touch-and-go; Aircraft Y entered the pattern directly below me from a 45-degree entry to the left downwind for Runway 21. My friend noticed traffic advisory alerts on an iPad running Foreflight that alerted us to the proximity. I maneuvered out of the pattern away from the runway to create space. Aircraft Y appeared to have no notice of my presence above him/her. Aircraft Y appeared on my right side (outside the pattern); disappeared under my Ercoupe; and reappeared on my left (inside the pattern from me).

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.