PA28 pilot reported near midair collision with a bonanza in the vicinity of 3CK.

Attributes
ACN	1023047
Time
Date	201207
Local Time Of Day	1201-1800
Place
Locale Reference	3CK.Airport
State Reference	IL
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	PA-28 Cherokee/Archer/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	Direct Visual Approach
Flight Plan	None
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Private
Experience	Flight Crew Last 90 Days 9 Flight Crew Total 317 Flight Crew Type 317
Events
Anomaly	Airspace Violation All Types Conflict NMAC
Miss Distance	Horizontal 100 Vertical 400

Narrative:

[I was] positioned 2-3 miles northwest of 3CK at 3;500 ft with intent to over fly field north to south to enter pattern for runway 26 at 3CK. Second aircraft (bonanza) northbound and 2 miles south of 3CK made CTAF announcement with intention of over flying field south to north at 3;500 ft. I immediately climbed approximately 400 ft - 500 ft (to 3;900 ft-4;000 ft MSL) to avoid oncoming traffic which a few moments later passed several hundred feet below and slightly to my left (east). I then immediately descended to 2;500 ft and then to 1;900 ft (tpa) and completed a normal landing at 3CK. Bravo airspace (4;000 ft - 10;000 ft) may or may not have been momentarily infringed upon during this evasive climb.

Original NASA ASRS Text

Title: PA28 pilot reported NMAC with a Bonanza in the vicinity of 3CK.

Narrative: [I was] positioned 2-3 miles northwest of 3CK at 3;500 FT with intent to over fly field north to south to enter pattern for Runway 26 at 3CK. Second aircraft (Bonanza) northbound and 2 miles south of 3CK made CTAF announcement with intention of over flying field south to north at 3;500 FT. I immediately climbed approximately 400 FT - 500 FT (to 3;900 FT-4;000 FT MSL) to avoid oncoming traffic which a few moments later passed several hundred feet below and slightly to my left (east). I then immediately descended to 2;500 FT and then to 1;900 FT (TPA) and completed a normal landing at 3CK. Bravo airspace (4;000 FT - 10;000 FT) may or may not have been momentarily infringed upon during this evasive climb.

Data retrieved from NASA's ASRS site as of July 2013 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.