Small Aircraft; High Wing; 1 Eng; Fixed Gear
Flight Crew Private
Flight Crew Last 90 Days 2; Flight Crew Total 84; Flight Crew Type 84
Conflict NMAC
Flight Crew Took Evasive Action
Human Factors
I was enroute from ZZZ to ZZZ1 at 5;500 feet MSL at approximately 90-95 KTS measured airspeed; heading 085. I announced on the local UNICOM that I was operating at 5;500 feet MSL and would be transiting the area at 5;500 feet; directly over PNM from the west to the east (actual track on iPad-based GPS was indicated at 086 degrees). When I was approximately 6 NM west of the field. At 5;500 MSL and approximately 1.5-2 NM west of PNM; another fixed wing aircraft overtook my aircraft from the rear; and flew directly in front of my aircraft from right to left (southwest to northeast) at a rate of speed at least 40 KTS faster than my own plane. The aircraft came within 100 feet of my own aircraft; on an approximate track of 070 degrees; and was at an identical altitude to my own; based on my observations and estimation. There was no radio announcement from the other aircraft despite being in the close vicinity to PNM; and the aircraft did not slow to make contact.Instead; the aircraft appeared to accelerate and climb quickly away from the situation. I turned right to evade the aircraft since it was behaving erratically. I contacted ZZZ control tower on the Tower frequency and asked for recommendations; since they were the last ATC with which I'd had contact. ZZZ tower stated that they'd had no contact with the aircraft I'd encountered; and they recommended frequency change to Minneapolis Center; since ZZZ does not have radar tracking capabilities. I contacted Minneapolis Center on the suggested frequency and squawked a new transponder code at their request. The controller at Minneapolis Center said there was another VFR aircraft in my area; climbing through 8000+ feet; 020 degrees from my location; with distance between aircraft increasing. Minneapolis Center stated that no contact had been made with the other aircraft and there was nothing more they could do regarding the near-miss situation. I requested change to VFR and local frequencies; which was approved; and descended to land at ZZZ1; my original destination. The other aircraft was a low-wing single-engine propeller design plane; a 2 or 4 seater aircraft; similar in style to a Cirrus. My aircraft does not have traffic avoidance technology; Stratus; or built-in GPS.
A general aviation pilot reported a NMAC at 5500 feet with an aircraft converging from right to left. Pilot stated that they were within 100 feet of each other.