Narrative:

While flying on an IFR flight plan at 5000' MSL under radar coverage, ZME advised of traffic at 1 O'clock squawking VFR at our same altitude moving east to west. We began searching for the traffic with negative contact. ZME again called advising us that traffic was at 12:30, 3 mi and closing at same altitude. I requested a higher altitude and at that time a small fixed wing aircraft, small aircraft Y, passed in front of us at 100', going in the opp direction at our altitude. My attention was on avoidance and I did not get any details on the fixed-wind aircraft. I notified ZME of the near midair collision and they had the fixed wing on their radar. We did not detect the fixed wing sooner because of its near head-on course with us. If ZME tracked the fixed wing to its destination, perhaps it could be idented. The aircraft should have been warned on guard frequencys by ZME to alter its course or altitude or advised us to change course or altitude to avoid this near miss.

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Original NASA ASRS Text

Title: NMAC BETWEEN MIL HELICOPTER AND SMA.

Narrative: WHILE FLYING ON AN IFR FLT PLAN AT 5000' MSL UNDER RADAR COVERAGE, ZME ADVISED OF TFC AT 1 O'CLOCK SQUAWKING VFR AT OUR SAME ALT MOVING E TO W. WE BEGAN SEARCHING FOR THE TFC WITH NEGATIVE CONTACT. ZME AGAIN CALLED ADVISING US THAT TFC WAS AT 12:30, 3 MI AND CLOSING AT SAME ALT. I REQUESTED A HIGHER ALT AND AT THAT TIME A SMALL FIXED WING ACFT, SMA Y, PASSED IN FRONT OF US AT 100', GOING IN THE OPP DIRECTION AT OUR ALT. MY ATTN WAS ON AVOIDANCE AND I DID NOT GET ANY DETAILS ON THE FIXED-WIND ACFT. I NOTIFIED ZME OF THE NMAC AND THEY HAD THE FIXED WING ON THEIR RADAR. WE DID NOT DETECT THE FIXED WING SOONER BECAUSE OF ITS NEAR HEAD-ON COURSE WITH US. IF ZME TRACKED THE FIXED WING TO ITS DEST, PERHAPS IT COULD BE IDENTED. THE ACFT SHOULD HAVE BEEN WARNED ON GUARD FREQS BY ZME TO ALTER ITS COURSE OR ALT OR ADVISED US TO CHANGE COURSE OR ALT TO AVOID THIS NEAR MISS.

Data retrieved from NASA's ASRS site as of July 2007 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.