Narrative:

My aircraft and another NORDO aircraft were involved in a near miss over. Before the event occurred I had picked up VFR flight following with TRACON. They gave me vectors for the ILS into ZZZ; with climb out instructions of left heading 030 and climb and maintain 2000ft MSL. I do not believe that TRACON knew of the traffic at this point in time. TRACON told me to switch to advisory frequency for ZZZ and we did. We made traffic reports at a 8 mile final; 5 mile final; 2 mile final; missed approach; climb out heading and altitude we were climbing up to; and then reported again once we were about to call TRACON. At that exact moment; I looked up and saw the red underbelly of the aircraft over me. This aircraft had not responded to any radio calls I made and wasn't transmitting his or her position in relation to ZZZ. On board my aircraft I have ads-B in and out and we did receive a traffic alert from the system which told us 'traffic 12 o'clock; same altitude'. This is when I took evasive action; as I was in a climb at the time. I had to pitch the nose way down in order to avoid colliding with the aircraft. After I determined that I was clear of the traffic and in control of the aircraft; I contacted TRACON; who stated they had been watching the aircraft but could not advise me of it because I had not yet contacted them. I believe that if I had not taken evasive action when I did; there would have been a midair collision. I believe that the failure of the mooney pilot to maintain a proper lookout for traffic; and not giving position reports contributed to this incident.

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Original NASA ASRS Text

Title: The pilot of a Diamond DV20 reported that while in climb he had a near miss with a Mooney that was not in radio communication.

Narrative: My aircraft and another NORDO aircraft were involved in a near miss over. Before the event occurred I had picked up VFR flight following with TRACON. They gave me vectors for the ILS into ZZZ; with climb out instructions of left heading 030 and climb and maintain 2000ft MSL. I do not believe that TRACON knew of the traffic at this point in time. TRACON told me to switch to advisory frequency for ZZZ and we did. We made traffic reports at a 8 mile final; 5 mile final; 2 mile final; missed approach; climb out heading and altitude we were climbing up to; and then reported again once we were about to call TRACON. At that exact moment; I looked up and saw the red underbelly of the aircraft over me. This aircraft had not responded to any radio calls I made and wasn't transmitting his or her position in relation to ZZZ. On board my aircraft I have ADS-B in and out and we did receive a traffic alert from the system which told us 'traffic 12 o'clock; same altitude'. This is when I took evasive action; as I was in a climb at the time. I had to pitch the nose way down in order to avoid colliding with the aircraft. After I determined that I was clear of the traffic and in control of the aircraft; I contacted TRACON; who stated they had been watching the aircraft but could not advise me of it because I had not yet contacted them. I believe that if I had not taken evasive action when I did; there would have been a midair collision. I believe that the failure of the Mooney pilot to maintain a proper lookout for traffic; and not giving position reports contributed to this incident.

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.