Narrative:

I reported abr in sight to minneapolis center. I was 15 miles to the northwest. He then cleared me for the visual and to cancel IFR and switch to advisories. I then asked him twice if I could get him on the ground on 120.6 and no response was heard. I then got a traffic alert 10 miles northwest of abr from an aircraft that was at 5500 ft and climbing rapidly traveling head-on at me. My altitude was 7000 ft MSL at the time. I then initiated a full power left hand climbing turn to 9000 ft to the left to avoid the aircraft. I then switched back to center and asked him if he had that aircraft and he stated that he departed VFR and just popped up.after landing I learned that the aircraft was a [military trainer] capable of a 4000 fpm climb and 400 kts. I believe the event could have been avoided if he had filed an IFR flight plan or contacted center on the ground for a flight following. Having a towered airport would have also avoided this incident. An aircraft operating at that kind of performance under VFR is a risk to others because he did not see me till he was right under my aircraft. Very little time to make a course correction. Another issue was the controller never confirmed my IFR cancellation or gave me a warning as the departing aircraft was climbing right at me. Radar coverage is higher at around 4500 ft so the controller had only 2500 ft to warn me; which was seconds. The controller must have got a traffic alert and I feel that I should have had some kind of warning operating under IFR. I [was] in fear for my life and my passengers.

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Original NASA ASRS Text

Title: CE-510 pilot inbound to ABR reported an NMAC with a high performance turbojet departing the airport VFR.

Narrative: I reported ABR in sight to Minneapolis center. I was 15 miles to the NW. He then cleared me for the visual and to cancel IFR and switch to advisories. I then asked him twice if I could get him on the ground on 120.6 and no response was heard. I then got a traffic alert 10 miles NW of ABR from an aircraft that was at 5500 ft and climbing rapidly traveling head-on at me. My altitude was 7000 ft MSL at the time. I then initiated a full power left hand climbing turn to 9000 ft to the left to avoid the aircraft. I then switched back to Center and asked him if he had that aircraft and he stated that he departed VFR and just popped up.After landing I learned that the aircraft was a [military trainer] capable of a 4000 fpm climb and 400 kts. I believe the event could have been avoided if he had filed an IFR flight plan or contacted Center on the ground for a flight following. Having a Towered airport would have also avoided this incident. An aircraft operating at that kind of performance under VFR is a risk to others because he did not see me till he was right under my aircraft. Very little time to make a course correction. Another issue was the Controller never confirmed my IFR cancellation or gave me a warning as the departing aircraft was climbing right at me. Radar coverage is higher at around 4500 ft so the controller had only 2500 ft to warn me; which was seconds. The Controller must have got a traffic alert and I feel that I should have had some kind of warning operating under IFR. I [was] in fear for my life and my passengers.

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.