Narrative:

I was approximately 7 miles northwest of ofp flying VFR on a 1200 mode C transponder code direct at 3;000 feet MSL on the extended center line of runway 16. I was in cruise flight about to descend to the ofp traffic pattern for runway 16. I was monitoring potomac approach on 126.75 but not in contact or receiving traffic advisories from potomac approach. The controller was talking to a boeing 737. The controller called out traffic to the B737 ahead at 3;000 feet. I looked back and there was the B737 at my 5 o'clock position a few hundred feet away at the same altitude. I immediately descended and turned to the left and observed the B737 climbing to the right. I was very surprised that such a large aircraft got so close and that they were at such a low altitude so far out from ric (over 20NM). I would have thought the controller would have vectored the B737 away from my VFR aircraft much earlier. I called the approach control supervisor and was told that this was common altitude that they use for approaches to runway 16 at ric. Fortunately there was no harm but I wanted to advise that vectoring large and fast aircraft in proximity to ofp at or below 3;000 has the potential for serious traffic conflicts.

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Original NASA ASRS Text

Title: Cessna 150 pilot reported an NMAC with a B737 being vectored for approach to RIC.

Narrative: I was approximately 7 miles northwest of OFP flying VFR on a 1200 mode C transponder code direct at 3;000 feet MSL on the extended center line of Runway 16. I was in cruise flight about to descend to the OFP traffic pattern for Runway 16. I was monitoring Potomac Approach on 126.75 but not in contact or receiving traffic advisories from Potomac Approach. The controller was talking to a Boeing 737. The controller called out traffic to the B737 ahead at 3;000 feet. I looked back and there was the B737 at my 5 o'clock position a few hundred feet away at the same altitude. I immediately descended and turned to the left and observed the B737 climbing to the right. I was very surprised that such a large aircraft got so close and that they were at such a low altitude so far out from RIC (over 20NM). I would have thought the controller would have vectored the B737 away from my VFR aircraft much earlier. I called the Approach Control Supervisor and was told that this was common altitude that they use for approaches to Runway 16 at RIC. Fortunately there was no harm but I wanted to advise that vectoring large and fast aircraft in proximity to OFP at or below 3;000 has the potential for serious traffic conflicts.

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.