Narrative:

I was doing traffic pattern with my student when [another aircraft] made a radio call saying that he was 6 miles east of the field going to enter left downwind for 09. However; that was the last call my student and I heard from him. We had been doing pattern work for the previous 45 minutes following a cessna in the pattern. My student had made a radio call saying that we were turning left crosswind for 09. As he was about to make a call saying that we were turning downwind; I looked out the right window to make sure we were clear and that is when I saw [the other aircraft] banking to the right. I immediately took control and banked the plane hard to the left and pushed the nose forward to get some airspeed. [The other aircraft] didn't make a proper entry and also stayed close to us at about our 4 o'clock. That is when he got back on the radio asking if we saw him and I responded yes we did and that we had been following the cessna. I climbed to about 1;000 feet MSL and informed him that we will extend downwind to let him land. I extended a few miles downwind and began turning base and then final while making the radio calls. However; when I said I was on final; [the other pilot] said that he thought that I was 'confused' and was on the upwind. I definitely wasn't as I was on final. What he meant by that; was he wasn't going to get off the runway; and that's exactly what he did. He landed and instead of taking the closest taxi way; he purposely stayed on the runway forcing us to do a go around. I understand that it is not set in stone of how to enter a traffic pattern at an uncontrolled field and that radio communication at one is not required however; I believe that [the other pilot] violated 91.13 careless or reckless operation. The pilot of [the other aircraft] almost caused a midair collision and created a potential hazard on the active runway. Also; there were two other planes in the pattern besides me. This sort of behavior was just unacceptable and dangerous.

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Original NASA ASRS Text

Title: A flight instructor and his student pilot experienced a near-mid-air-collision when another pilot entered the traffic pattern without proper radio usage.

Narrative: I was doing traffic pattern with my student when [another aircraft] made a radio call saying that he was 6 miles east of the field going to enter left downwind for 09. However; that was the last call my student and I heard from him. We had been doing pattern work for the previous 45 minutes following a Cessna in the pattern. My student had made a radio call saying that we were turning left crosswind for 09. As he was about to make a call saying that we were turning downwind; I looked out the right window to make sure we were clear and that is when I saw [the other aircraft] banking to the right. I immediately took control and banked the plane hard to the left and pushed the nose forward to get some airspeed. [The other aircraft] didn't make a proper entry and also stayed close to us at about our 4 o'clock. That is when he got back on the radio asking if we saw him and I responded yes we did and that we had been following the Cessna. I climbed to about 1;000 feet MSL and informed him that we will extend downwind to let him land. I extended a few miles downwind and began turning base and then final while making the radio calls. However; when I said I was on final; [the other pilot] said that he thought that I was 'confused' and was on the upwind. I definitely wasn't as I was on final. What he meant by that; was he wasn't going to get off the runway; and that's exactly what he did. He landed and instead of taking the closest taxi way; he purposely stayed on the runway forcing us to do a go around. I understand that it is not set in stone of how to enter a traffic pattern at an uncontrolled field and that radio communication at one is not required however; I believe that [the other pilot] violated 91.13 careless or reckless operation. The pilot of [the other aircraft] almost caused a midair collision and created a potential hazard on the active runway. Also; there were two other planes in the pattern besides me. This sort of behavior was just unacceptable and dangerous.

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.