Narrative:

The skyhawk was westbound level at 10;000 ft and reported a near midair collision; the aircraft passed about twenty feet below him. I was not speaking with an experimental nor did I observe his target in time to call traffic to the experimental. After the skyhawk called the near midair collision; I did observe a target at his twelve o'clock and less than a mile. This target went on to clip bigg's 'red' airspace before calling my relieving controller for services. The relieving controller noted with 90% certainty that experimental was the offending aircraft. This occurred in the outer area; so the only thing that could be done is increasing my vigilance. The offending aircraft was reported as a jet; so maneuvering the skyhawk out of his way; especially considering the lack of communication.

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Original NASA ASRS Text

Title: ELP Controller described a conflict event between an IFR aircraft and an unknown/unobserved VFR jet; allegedly the offending aircraft in this case.

Narrative: The Skyhawk was westbound level at 10;000 FT and reported a near midair collision; the aircraft passed about twenty feet below him. I was not speaking with an experimental nor did I observe his target in time to call traffic to the experimental. After the Skyhawk called the NMAC; I did observe a target at his twelve o'clock and less than a mile. This target went on to clip Bigg's 'RED' airspace before calling my Relieving Controller for services. The Relieving Controller noted with 90% certainty that experimental was the offending aircraft. This occurred in the outer area; so the only thing that could be done is increasing my vigilance. The offending aircraft was reported as a jet; so maneuvering the Skyhawk out of his way; especially considering the lack of communication.

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.