Narrative:

Having just past 'dto' eastbound at +/-2600 ft MSL; in cruise flight at approximately 115 KIAS; VFR; 10 mi visibility; broken layer at +/-3500 ft; wind 140 degrees/7 KTS; approximately 5 northeast 30F and approximately 10 mi west of T31; #2 ship in flight of 2 (I was #1) cautioned me of conflicting traffic off my l-hand wing. As I scanned and lifted l-hand wing slightly; a bright white aircraft flew from behind my l-hand left strut. I observed his/my closure scenario and quickly determined we were in conflict as we were at same altitude and converging. He was about 1 mi distant and appeared to either have just finished a r-hand turn; or just leveling out from descent. After another few seconds I determined I must do evasive action. Any turns would have hid him behind my wings. I therefore announced to #2 ship I would rapidly descend (EST at 1000 FPM). I still had not lost eye contact with him when I leveled off some 300-400 ft lower (2200 ft MSL?); at which time he passed directly overhead; sbound without any disturbance to his attitude (eg; level cruise). I noted type aircraft was t-tail turboprop beechcraft product; maybe C90; king air or variant. My impression he was inbound for addison (ads) and not VFR. My impressions; looking back as I fill this out; are that at 2600 ft; on approach (maybe?) to ads; he was not VFR; but maybe IFR. Maybe; since he made no acknowledgement of my presence (by changing his aircraft attitude; evasive action on his part) ATC; either at dfw approach; or at ads; did not/could not see my transponder; which I did verify was selected to 1200 and was actively showing my altitude. #2 ship verified his inaction of response. My questions are two: 1) why was he so low; as a higher speed aircraft; on his flight path? Either he blew his MDA/floor/assigned altitude; or he was reading plates. 2) why didn't the controller call VFR traffic (#1 and #2 ships) so he could have a chance of see-avoid activity? As VFR-only pilot; I do not fly above 3000 ft in this area (ever!) just to avoid this type of conflict. Maybe ATC (or whomever) can reiterate that VFR aircraft are indeed present along highway 380 between dtn and tki; and on some days; in great numbers.

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Original NASA ASRS Text

Title: C172 PILOT AND HIS WING MAN REPORT NMAC WITH KING AIR 5 NM NW OF 30F AT 2600 FEET.

Narrative: HAVING JUST PAST 'DTO' EBOUND AT +/-2600 FT MSL; IN CRUISE FLT AT APPROX 115 KIAS; VFR; 10 MI VISIBILITY; BROKEN LAYER AT +/-3500 FT; WIND 140 DEGS/7 KTS; APPROX 5 NE 30F AND APPROX 10 MI W OF T31; #2 SHIP IN FLT OF 2 (I WAS #1) CAUTIONED ME OF CONFLICTING TFC OFF MY L-HAND WING. AS I SCANNED AND LIFTED L-HAND WING SLIGHTLY; A BRIGHT WHITE ACFT FLEW FROM BEHIND MY L-HAND L STRUT. I OBSERVED HIS/MY CLOSURE SCENARIO AND QUICKLY DETERMINED WE WERE IN CONFLICT AS WE WERE AT SAME ALT AND CONVERGING. HE WAS ABOUT 1 MI DISTANT AND APPEARED TO EITHER HAVE JUST FINISHED A R-HAND TURN; OR JUST LEVELING OUT FROM DSCNT. AFTER ANOTHER FEW SECONDS I DETERMINED I MUST DO EVASIVE ACTION. ANY TURNS WOULD HAVE HID HIM BEHIND MY WINGS. I THEREFORE ANNOUNCED TO #2 SHIP I WOULD RAPIDLY DSND (EST AT 1000 FPM). I STILL HAD NOT LOST EYE CONTACT WITH HIM WHEN I LEVELED OFF SOME 300-400 FT LOWER (2200 FT MSL?); AT WHICH TIME HE PASSED DIRECTLY OVERHEAD; SBOUND WITHOUT ANY DISTURBANCE TO HIS ATTITUDE (EG; LEVEL CRUISE). I NOTED TYPE ACFT WAS T-TAIL TURBOPROP BEECHCRAFT PRODUCT; MAYBE C90; KING AIR OR VARIANT. MY IMPRESSION HE WAS INBOUND FOR ADDISON (ADS) AND NOT VFR. MY IMPRESSIONS; LOOKING BACK AS I FILL THIS OUT; ARE THAT AT 2600 FT; ON APCH (MAYBE?) TO ADS; HE WAS NOT VFR; BUT MAYBE IFR. MAYBE; SINCE HE MADE NO ACKNOWLEDGEMENT OF MY PRESENCE (BY CHANGING HIS ACFT ATTITUDE; EVASIVE ACTION ON HIS PART) ATC; EITHER AT DFW APCH; OR AT ADS; DID NOT/COULD NOT SEE MY XPONDER; WHICH I DID VERIFY WAS SELECTED TO 1200 AND WAS ACTIVELY SHOWING MY ALT. #2 SHIP VERIFIED HIS INACTION OF RESPONSE. MY QUESTIONS ARE TWO: 1) WHY WAS HE SO LOW; AS A HIGHER SPD ACFT; ON HIS FLT PATH? EITHER HE BLEW HIS MDA/FLOOR/ASSIGNED ALT; OR HE WAS READING PLATES. 2) WHY DIDN'T THE CTLR CALL VFR TFC (#1 AND #2 SHIPS) SO HE COULD HAVE A CHANCE OF SEE-AVOID ACTIVITY? AS VFR-ONLY PLT; I DO NOT FLY ABOVE 3000 FT IN THIS AREA (EVER!) JUST TO AVOID THIS TYPE OF CONFLICT. MAYBE ATC (OR WHOMEVER) CAN REITERATE THAT VFR ACFT ARE INDEED PRESENT ALONG HWY 380 BTWN DTN AND TKI; AND ON SOME DAYS; IN GREAT NUMBERS.

Data retrieved from NASA's ASRS site as of May 2009 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.