Narrative:

I was conducting a training flight in a PA-28 at falcon field in mesa arizona; and making a final approach to 4L after we were cleared to land by the tower. While on a 1.5 mile final to the runway; an experimental aircraft encroached on our path of flight due to him not abiding by the instructions given to him by the tower to extend his downwind and follow behind us. I noticed the aircraft approaching from our right side and had to bring it to the towers attention as they proceeded to tell the aircraft to 'go-around' and proceeded to provide new instructions to the aircraft. This event caused a decrease in horizontal separation as he was also at the same altitude as us. The distance between us was approximately 300 feet.

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Original NASA ASRS Text

Title: PA-28 instructor experienced a NMAC with an experimental aircraft that had been instructed by the Tower to extend their downwind for the PA-28 landing ahead; but did not. The reporter notified the Tower of the conflict and the experimental was sent around.

Narrative: I was conducting a training flight in a PA-28 at Falcon Field in Mesa Arizona; and making a final approach to 4L after we were cleared to land by the tower. While on a 1.5 mile final to the runway; an experimental aircraft encroached on our path of flight due to him not abiding by the instructions given to him by the tower to extend his downwind and follow behind us. I noticed the aircraft approaching from our right side and had to bring it to the towers attention as they proceeded to tell the aircraft to 'go-around' and proceeded to provide new instructions to the aircraft. This event caused a decrease in horizontal separation as he was also at the same altitude as us. The distance between us was approximately 300 feet.

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.