Narrative:

I was departing [and] cleared to climb to 11;000 feet and issued no traffic alerts. I was climbing out on the departure and under radar contact with center. I was climbing through 2000 feet and turning on the ATC assigned course. I looked up to find a single engine low wing aircraft at my 12 o'clock and above somewhere between 300-500 feet and descending into me. I modified my course to the right and off my assigned heading briefly to avoid a collision. No emergency existed at the time and my control inputs did not require aggressive maneuvering. However had I not noticed the aircraft we very likely would have collided as the aircraft was directly above me and we were converging into each other vertically. I reported the contact to center and they told me tower should have notified me of the traffic. They were reportedly on a transition and descending which I could see as I climbed to the west of the traffic. I let them know that tower had not notified me of the traffic and that I had adjusted my course to avoid the aircraft and was returning to assigned heading. I had turned off course roughly 30 degrees to avoid the traffic. I then contacted tower and was told that they were told by center that the traffic would be behind me and not a factor. They also informed me that they did not have radar and can only rely on reports from center. This is the second close call I have had at the same airport departure. ATC did not alert me to traffic in the area. I was under an IFR clearance and in radar contact on an assigned heading with center. The controller did not notify me of traffic in close proximity to me and I had to maneuver to avoid the traffic. In this case; as well; there was no urgency of a collision but had I not noticed the aircraft we likely would have collided. There seems to be a need for better traffic monitoring on the approach class delta airspace. In roughly a month; I had two close calls that required maneuvering to avoid a collision. I would suggest a remote radar visibility or an actual radar at the airport or adjust the approach away from the departures.

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Original NASA ASRS Text

Title: A pilot reported; twice; recently they were on a departure and had to take evasive action to avoid adjacent airport traffic that ATC did not advise them about.

Narrative: I was departing [and] cleared to climb to 11;000 feet and issued no traffic alerts. I was climbing out on the departure and under radar contact with Center. I was climbing through 2000 feet and turning on the ATC assigned course. I looked up to find a single engine low wing aircraft at my 12 o'clock and above somewhere between 300-500 feet and descending into me. I modified my course to the right and off my assigned heading briefly to avoid a collision. No emergency existed at the time and my control inputs did not require aggressive maneuvering. However had I not noticed the aircraft we very likely would have collided as the aircraft was directly above me and we were converging into each other vertically. I reported the contact to Center and they told me Tower should have notified me of the traffic. They were reportedly on a transition and descending which I could see as I climbed to the west of the traffic. I let them know that Tower had not notified me of the traffic and that I had adjusted my course to avoid the aircraft and was returning to assigned heading. I had turned off course roughly 30 degrees to avoid the traffic. I then contacted Tower and was told that they were told by Center that the traffic would be behind me and not a factor. They also informed me that they did not have radar and can only rely on reports from Center. This is the second close call I have had at the same airport departure. ATC did not alert me to traffic in the area. I was under an IFR clearance and in radar contact on an assigned heading with Center. The controller did not notify me of traffic in close proximity to me and I had to maneuver to avoid the traffic. In this case; as well; there was no urgency of a collision but had I not noticed the aircraft we likely would have collided. There seems to be a need for better traffic monitoring on the approach Class Delta airspace. In roughly a month; I had two close calls that required maneuvering to avoid a collision. I would suggest a remote radar visibility or an actual radar at the airport or adjust the approach away from the departures.

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.