Narrative:

I had turned from a westerly heading (approximately 285-295 degrees) to a southerly one (170-180 degrees). After proceeding on this new heading for a short time, less than a min, the twin engine aircraft passed quickly slightly in front of and below me from left to right (on a generally westerly heading). The miss distance was very small as I felt the other's wake turbulence as it passed. I had not seen the other aircraft either before or after my turn. The other aircraft may have had difficulty seeing traffic as it was heading towards a setting sun. The entire incident happened so quickly that I was unable to react and take evasive action. Improved scanning techniques in both aircraft could have prevented this incident.

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Original NASA ASRS Text

Title: NMAC BTWN A PIPER PA28, AND A TWIN ENG CESSNA DURING CRUISE FLT AT AN ALT OF 3000 FT MSL.

Narrative: I HAD TURNED FROM A WESTERLY HDG (APPROX 285-295 DEGS) TO A SOUTHERLY ONE (170-180 DEGS). AFTER PROCEEDING ON THIS NEW HDG FOR A SHORT TIME, LESS THAN A MIN, THE TWIN ENG ACFT PASSED QUICKLY SLIGHTLY IN FRONT OF AND BELOW ME FROM L TO R (ON A GENERALLY WESTERLY HDG). THE MISS DISTANCE WAS VERY SMALL AS I FELT THE OTHER'S WAKE TURB AS IT PASSED. I HAD NOT SEEN THE OTHER ACFT EITHER BEFORE OR AFTER MY TURN. THE OTHER ACFT MAY HAVE HAD DIFFICULTY SEEING TFC AS IT WAS HDG TOWARDS A SETTING SUN. THE ENTIRE INCIDENT HAPPENED SO QUICKLY THAT I WAS UNABLE TO REACT AND TAKE EVASIVE ACTION. IMPROVED SCANNING TECHNIQUES IN BOTH ACFT COULD HAVE PREVENTED THIS INCIDENT.

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.