Narrative:

Takeoff from kprc runway 21L on an IFR flight plan took place behind a single engine which I believe was a solo student. The initial clearance was fly runway heading. After takeoff; because of the overtake speed of which I was having on the single engine; the tower controller instructed me to fly a heading of 15 degrees right because of slower traffic ahead. As I was coming up on the right lower side of the single; the single engine suddenly made a sharp right turn directly into me. I began getting TCAS alerts and visually saw the conflict being created. I queried the controller at least twice as to where the single engine was going and the controller was silent. I had to stop my climb; push the nose over and then passed under the single by about 200 to 400 feet. If I would have somehow lost sight of the single; it could have possibly been a very different outcome. My belief of what may have happened was because the tower was using split frequencies between east and west sides of the airport. I feel there was a breakdown of communication between the two controllers. I am fairly certain that the single engine had been switched to the west controller before he/she made their right turn in front of and directly into me; and quite possibly was instructed to do so by the west controller. Upon landing at my destination I made a phone call to kprc tower and spoke with the supervisor on duty. As we discussed the situation I was led to believe that the story which had been given from the controller was very much different than the actual event that transpired.

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Original NASA ASRS Text

Title: Aircraft departing PRC described conflict event with prior departure; reporter suspecting miscommunication between the two local controllers.

Narrative: Takeoff from KPRC Runway 21L on an IFR flight plan took place behind a single engine which I believe was a solo student. The initial clearance was fly runway heading. After takeoff; because of the overtake speed of which I was having on the single engine; the tower controller instructed me to fly a heading of 15 degrees right because of slower traffic ahead. As I was coming up on the right lower side of the single; the single engine suddenly made a sharp right turn directly into me. I began getting TCAS alerts and visually saw the conflict being created. I queried the controller at least twice as to where the single engine was going and the controller was silent. I had to stop my climb; push the nose over and then passed under the single by about 200 to 400 feet. If I would have somehow lost sight of the single; it could have possibly been a very different outcome. My belief of what may have happened was because the tower was using split frequencies between east and west sides of the airport. I feel there was a breakdown of communication between the two controllers. I am fairly certain that the single engine had been switched to the west controller before he/she made their right turn in front of and directly into me; and quite possibly was instructed to do so by the west controller. Upon landing at my destination I made a phone call to KPRC tower and spoke with the supervisor on duty. As we discussed the situation I was led to believe that the story which had been given from the controller was very much different than the actual event that transpired.

Data retrieved from NASA's ASRS site as of April 2012 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.