Narrative:

I was VFR approaching arrival for landing. I had been cruising at 3;500 ft MSL approaching arrival from the nnw. While descending and making the initial call to tower with position and request for landing; I saw another aircraft just below and left of my position. I was headed 160 in the descent passing 2;600 or 2;700 ft MSL and the other aircraft was headed west and appeared to be at 2;500 ft MSL; a common VFR altitude below the chicago class B airspace. I saw the aircraft just forward of the leading edge of my left wing and suspect my low wing had blocked the line of sight prior to the late sighting. I reacted by stopping the descent momentarily. The event lasted less than five seconds. The other aircraft was a low wing single engine fixed gear aircraft with blue and gray colors. It may have been some model of piper. I was transmitting to the tower during the event. The tower had other traffic on its radar including another aircraft 3-4 miles ahead of me approaching for landing. The tower made several other traffic advisories; but did not mention the aircraft involved in this incident.

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Original NASA ASRS Text

Title: As he was descending toward his airport of intended landing a BE33 pilot experienced an NMAC with a same direction low wing single.

Narrative: I was VFR approaching ARR for landing. I had been cruising at 3;500 FT MSL approaching ARR from the NNW. While descending and making the initial call to Tower with position and request for landing; I saw another aircraft just below and left of my position. I was headed 160 in the descent passing 2;600 or 2;700 FT MSL and the other aircraft was headed west and appeared to be at 2;500 FT MSL; a common VFR altitude below the Chicago Class B airspace. I saw the aircraft just forward of the leading edge of my left wing and suspect my low wing had blocked the line of sight prior to the late sighting. I reacted by stopping the descent momentarily. The event lasted less than five seconds. The other aircraft was a low wing single engine fixed gear aircraft with blue and gray colors. It may have been some model of Piper. I was transmitting to the Tower during the event. The Tower had other traffic on its radar including another aircraft 3-4 miles ahead of me approaching for landing. The Tower made several other traffic advisories; but did not mention the aircraft involved in this incident.

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.