Narrative:

I departed tyr VFR. I departed on runway 13 and was given permission to make a right turnout. I asked for and was given permission to contact longview approach. I was talking with longview and asking for VFR flight following when a turboprop (type unknown) suddenly appeared from below my right wing. I was on a heading of about 245 degrees and estimate his initial heading to have been about 260 degrees. I'm also not sure exactly how far from the tyler airport I was but it had been several mins since I departed so I would estimate that I was outside the class D airspace. I didn't notice my altitude but would estimate it to be around 2500 ft. He was obviously doing a hard pushover with his highest altitude being somewhat less than mine. He then began a turn to the right. Shortly thereafter he came up on longview's frequency talking about a single engine bonanza and asking longview if they saw me. Distances are difficult to judge in-flight but at the closest point that I could observe he was probably 500 ft away at about my 2 O'clock position. I feel certain that the aircraft was the same one that was just starting engines at tyler as I taxied out. I explained to longview that the aircraft had come up from behind and underneath me and that I could not have seen him until he passed me. It appeared to me that the evasive maneuver done by the pilot was excessive and I believe that he might have been reacting to a TCASII warning and didn't acquire me visually until he had begun the evasive maneuver. I did not take any evasive action myself. My transponder was on and squawking mode C. I don't know if I had been given a code yet by longview. Unfortunately, I don't know of anything that I could have done to prevent this from occurring. VFR operations in the vicinity of an airport require all pilots to be especially vigilant in watching for other aircraft.

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Original NASA ASRS Text

Title: A BEECH BONANZA 35 PLT OBSERVED AN AIRLINE TURBOPROP ACFT SEEMINGLY IN AN EVASIVE MANEUVER FROM BELOW AND TO THE R ON DEP FROM TYR.

Narrative: I DEPARTED TYR VFR. I DEPARTED ON RWY 13 AND WAS GIVEN PERMISSION TO MAKE A R TURNOUT. I ASKED FOR AND WAS GIVEN PERMISSION TO CONTACT LONGVIEW APCH. I WAS TALKING WITH LONGVIEW AND ASKING FOR VFR FLT FOLLOWING WHEN A TURBOPROP (TYPE UNKNOWN) SUDDENLY APPEARED FROM BELOW MY R WING. I WAS ON A HDG OF ABOUT 245 DEGS AND ESTIMATE HIS INITIAL HDG TO HAVE BEEN ABOUT 260 DEGS. I'M ALSO NOT SURE EXACTLY HOW FAR FROM THE TYLER ARPT I WAS BUT IT HAD BEEN SEVERAL MINS SINCE I DEPARTED SO I WOULD ESTIMATE THAT I WAS OUTSIDE THE CLASS D AIRSPACE. I DIDN'T NOTICE MY ALT BUT WOULD ESTIMATE IT TO BE AROUND 2500 FT. HE WAS OBVIOUSLY DOING A HARD PUSHOVER WITH HIS HIGHEST ALT BEING SOMEWHAT LESS THAN MINE. HE THEN BEGAN A TURN TO THE R. SHORTLY THEREAFTER HE CAME UP ON LONGVIEW'S FREQ TALKING ABOUT A SINGLE ENG BONANZA AND ASKING LONGVIEW IF THEY SAW ME. DISTANCES ARE DIFFICULT TO JUDGE INFLT BUT AT THE CLOSEST POINT THAT I COULD OBSERVE HE WAS PROBABLY 500 FT AWAY AT ABOUT MY 2 O'CLOCK POS. I FEEL CERTAIN THAT THE ACFT WAS THE SAME ONE THAT WAS JUST STARTING ENGS AT TYLER AS I TAXIED OUT. I EXPLAINED TO LONGVIEW THAT THE ACFT HAD COME UP FROM BEHIND AND UNDERNEATH ME AND THAT I COULD NOT HAVE SEEN HIM UNTIL HE PASSED ME. IT APPEARED TO ME THAT THE EVASIVE MANEUVER DONE BY THE PLT WAS EXCESSIVE AND I BELIEVE THAT HE MIGHT HAVE BEEN REACTING TO A TCASII WARNING AND DIDN'T ACQUIRE ME VISUALLY UNTIL HE HAD BEGUN THE EVASIVE MANEUVER. I DID NOT TAKE ANY EVASIVE ACTION MYSELF. MY XPONDER WAS ON AND SQUAWKING MODE C. I DON'T KNOW IF I HAD BEEN GIVEN A CODE YET BY LONGVIEW. UNFORTUNATELY, I DON'T KNOW OF ANYTHING THAT I COULD HAVE DONE TO PREVENT THIS FROM OCCURRING. VFR OPS IN THE VICINITY OF AN ARPT REQUIRE ALL PLTS TO BE ESPECIALLY VIGILANT IN WATCHING FOR OTHER ACFT.

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.