Bonanza 35
Flight Crew Private; Flight Crew Instrument
Flight Crew Last 90 Days 20; Flight Crew Total 692; Flight Crew Type 130
ATC Issue All Types; Conflict NMAC
General None Reported / Taken
While in cruise flight I saw an aircraft quickly pass from left to right underneath us with a vertical distance of less than 200 FT. Piloted aircraft was flying south and approaching aircraft was on a west south west heading. Approaching aircraft was seen at the 7 to 8 o'clock position aft of the left wing at a distance of less than 500 FT horizontally. I was operating on an IFR flight plan and was in communication with Chicago Center. No traffic advisory or warning was issued. I immediately reported the near miss to Chicago Center twice with no acknowledgement. I subsequently made three radio calls but was not answered until 15 minutes post incident. I requested the number for Chicago Center and reported the incident to the facility once on the ground. Chicago Center was able to find the recording and said it would be passed to the Quality team for review. Due to the high speeds and short duration of the near miss; there was no time to deviate. The rest of the flight continued uneventfully.
I was working Sector 51 and 50 combined sequencing back doors for ORD and MDW arrivals. We also had 2 Skydive airplanes over Skydive Chicago (8N2) all morning traffic was slightly up but manageable. There were multiple VFR targets in C90 air space just south east of Joliet (JOT) VOR like any other day. While sequencing my arrivals and trying to miss the jumper aircraft with my inbounds I noticed a Bonanza flashing in C90's airspace approximately 7 miles south east of JOT VOR. At this point the aircraft was not on my frequency. He checked on and about 5 minutes later the pilot advised he had an aircraft pass close by a few miles back.I was not aware of any VFR targets close to him other than the ones that were in C90's airspace.I need to keep pilots aware of VFR targets in their area. Maybe C90 could work out a different altitude or not transfer communications until making the pilot aware of VFR targets in the vicinity.
An IFR Beech Bonanza pilot suffered an NMAC with a high wing Cessna.