Narrative:

I was the dispatcher on duty. I had received a 10 [mile] out call from aircraft X on company frequency. I also had CTAF radio on in the dispatch office. There was an aircraft making garbled and unreadable call that turned out to be aircraft Y. Aircraft X had made multiple calls for a straight in final at 10; 5; 3; 1 miles and short final. I was looking out the window of the dispatch office and observed aircraft X on an extremely short final less than 200 ft. Over the local cemetery; and aircraft Y that made an aggressive short approach which appeared to start abeam the numbers of the runway and descended on top of and into aircraft X. From my view aircraft X was definitely the lower aircraft on approach and had the right of way. Aircraft X made an evasive maneuver to avoid collision from aircraft Y which appeared to be less than 10 ft. Horizontal and vertically. Aircraft X continued approach without further incident and taxied for deplaning and shut down. Aircraft Y continued very close behind before making a decision to go around. Following the incident; aircraft Y radio call became more clear and concise and exhibited unprofessional radio etiquette before circling around for landing. At this time aircraft Z was repositioning from east to west ramp on the taxiway and aircraft Y exited the runway and cutoff aircraft Z who had to taxi into helipad parking to avoid and give way to aircraft Y. Aircraft Y then taxied to the FBO on the east side of the field and shutdown. This was the end of my observation.

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Original NASA ASRS Text

Title: A Dispatcher at a non-towered airport reported a NMAC on short final and the aircraft that caused the NMAC cut off a different aircraft while taxiing.

Narrative: I was the Dispatcher on duty. I had received a 10 [mile] out call from Aircraft X on company frequency. I also had CTAF radio on in the dispatch office. There was an aircraft making garbled and unreadable call that turned out to be Aircraft Y. Aircraft X had made multiple calls for a straight in final at 10; 5; 3; 1 miles and short final. I was looking out the window of the dispatch office and observed Aircraft X on an extremely short final less than 200 ft. over the local cemetery; and Aircraft Y that made an aggressive short approach which appeared to start abeam the numbers of the runway and descended on top of and into Aircraft X. From my view Aircraft X was definitely the lower aircraft on approach and had the right of way. Aircraft X made an evasive maneuver to avoid collision from Aircraft Y which appeared to be less than 10 ft. horizontal and vertically. Aircraft X continued approach without further incident and taxied for deplaning and shut down. Aircraft Y continued very close behind before making a decision to go around. Following the incident; Aircraft Y radio call became more clear and concise and exhibited unprofessional radio etiquette before circling around for landing. At this time Aircraft Z was repositioning from east to west ramp on the taxiway and Aircraft Y exited the runway and cutoff Aircraft Z who had to taxi into helipad parking to avoid and give way to Aircraft Y. Aircraft Y then taxied to the FBO on the east side of the field and shutdown. This was the end of my observation.

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.