Narrative:

Two accidents almost happened today. My student and I were in the pattern. We extended downwind to allow a dc-3 to land. As we were preparing to turn base we saw a plane pass about 100 ft or less underneath us. They made no radio calls and only entered the pattern on extended base. They continued onto final and landed shortly after the dc-3 touched down. The dc-3 was still on the runway (approximately 2500 ft separation). He promptly left making no departure radio call but did report leaving the area to the west.

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Original NASA ASRS Text

Title: Piper PA-28 instructor reported they were on an extended downwind when another small airplane cut under them nearly causing a midair collision.

Narrative: Two accidents almost happened today. My student and I were in the pattern. We extended downwind to allow a DC-3 to land. As we were preparing to turn base we saw a plane pass about 100 ft or less underneath us. They made no radio calls and only entered the pattern on extended base. They continued onto final and landed shortly after the DC-3 touched down. The DC-3 was still on the runway (approximately 2500 ft separation). He promptly left making no departure radio call but did report leaving the area to the west.

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.