Narrative:

While remaining on my IFR flight plan; we were cleared the visual approach by center into ZZZ approaching the airport from the west. The wind was favoring runway xy so we entered the left downwind traffic pattern at 4;000 MSL. While entering the pattern and making traffic calls I noticed a target (pilatus pc-12) appear on TCAS 15 NM away to the south of the field level at 3;500 MSL not making radio calls. We continued making position reports over the CTAF. On the midfield downwind the traffic approached 5 NM south of us and 10 NM south of the field; we finally received a radio call from the pilatus saying they had us in sight. He did not state his intentions of how he would sequence himself in the pattern. We continued downwind when my first officer reported traffic in sight turning right to enter the downwind beneath us and I received a TCAS 'monitor vertical speed.' I immediately got on the radio and broadcast to the other pilot that he was cutting us off. My TCAS reported the traffic at 3;700 MSL and climbing (300 feet) beneath us. My first officer reported him off our right side by about 300 feet laterally while maintaining visual contact with him at all times. It was not until I was yelling at him on the radio did the pilatus pilot call back saying they would make a right 360 degree turn in the downwind to enter behind us. After flying the remainder of the pattern; we landed safely rolling the airplane to the end of the runway. As I began my left turnoff to exit; I glanced behind me and the pilatus was touching down on the aiming point. I estimate he was approximately 5;500 feet laterally behind us while I was still in the center of the runway before clearing.

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Original NASA ASRS Text

Title: CRJ-200 Captain reported a NMAC with a PC-12 in the pattern at a non-towered airport.

Narrative: While remaining on my IFR flight plan; we were cleared the visual approach by Center into ZZZ approaching the airport from the west. The wind was favoring Runway XY so we entered the left downwind traffic pattern at 4;000 MSL. While entering the pattern and making traffic calls I noticed a target (Pilatus PC-12) appear on TCAS 15 NM away to the south of the field level at 3;500 MSL not making radio calls. We continued making position reports over the CTAF. On the midfield downwind the traffic approached 5 NM south of us and 10 NM south of the field; we finally received a radio call from the Pilatus saying they had us in sight. He did not state his intentions of how he would sequence himself in the pattern. We continued downwind when my First Officer reported traffic in sight turning right to enter the downwind beneath us and I received a TCAS 'monitor vertical speed.' I immediately got on the radio and broadcast to the other pilot that he was cutting us off. My TCAS reported the traffic at 3;700 MSL and climbing (300 feet) beneath us. My First Officer reported him off our right side by about 300 feet laterally while maintaining visual contact with him at all times. It was not until I was yelling at him on the radio did the Pilatus pilot call back saying they would make a right 360 degree turn in the downwind to enter behind us. After flying the remainder of the pattern; we landed safely rolling the airplane to the end of the runway. As I began my left turnoff to exit; I glanced behind me and the Pilatus was touching down on the aiming point. I estimate he was approximately 5;500 feet laterally behind us while I was still in the center of the runway before clearing.

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.