GA pilot reported an near midair collision with an experimental aircraft that was not in communicati...

Attributes
ACN	1564483
Time
Date	201807
Local Time Of Day	0601-1200
Place
Locale Reference	ZAU.ARTCC
State Reference	IL
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Cessna Single Piston Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Other VFR Chicago Under 3 000'
Flight Plan	VFR
Aircraft 2
Make Model Name	Amateur/Home Built/Experimental
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Person 1
Function	Single Pilot
Qualification	Flight Crew Private
Experience	Flight Crew Last 90 Days 35 Flight Crew Total 1500 Flight Crew Type 650
Events
Anomaly	Conflict NMAC Deviation - Procedural Published Material / Policy
Miss Distance	Horizontal 200 Vertical 100

Narrative:

Was in contact with flight following; chicago ATC. Aircraft Y passed opposite direction on right side within 200 feet. ATC warned of the target 4 miles out; then 2 miles. My passenger is a pilot and we were both looking; but did not see aircraft Y until it was upon us.very scary. Do not have a good solution; except that aircraft Y did not appear to be in communication with ATC and therefore did not know our whereabouts. Yes; ads-B will help when installed.next time will stay further offshore so will not get pinched closer to the shoreline where traffic is most likely to be. Raises another issue with being too far from the shore in case of an engine failure.

Original NASA ASRS Text

Title: GA pilot reported an NMAC with an experimental aircraft that was not in communication with ATC.

Narrative: Was in contact with flight following; Chicago ATC. Aircraft Y passed opposite direction on right side within 200 feet. ATC warned of the target 4 miles out; then 2 miles. My passenger is a pilot and we were both looking; but did not see Aircraft Y until it was upon us.Very scary. Do not have a good solution; except that Aircraft Y did not appear to be in communication with ATC and therefore did not know our whereabouts. Yes; ADS-B will help when installed.Next time will stay further offshore so will not get pinched closer to the shoreline where traffic is most likely to be. Raises another issue with being too far from the shore in case of an engine failure.

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.

GA pilot reported an near midair collision with an experimental aircraft that was not in communication with ATC.