Narrative:

I received my clearance from dal love clearance. Cleared to austin initial left turn to 185 degrees heading; radar vector act-V17-direct; climb and maintain 2000 ft and expect 8000 ft. WX obtained from ATIS: 030/10 10 120000 sct; 27000 sct; 10/0 30.38 visibility approach runway 31L & runway 31R. I was cleared by tower for takeoff on runway 31R and advised of wake turbulence behind a B737. I accepted the takeoff clearance and started my takeoff roll. Upon liftoff I immediately experienced wake turbulence and offset my heading to 285 degrees for my climb out. Close to 2000 ft I was switched to departure frequency and advised that I was 2000 ft and gave my heading as 285 degrees; I was told to climb to 3000 ft and turn to 140 degrees and 'move it on around.' I did as requested and continued on the flight without further incidence. I believe my failure to start the clearance turn immediately to 185 degrees may have caused concern for departure control. I also made a mistake in not stating that I was in the turn; I relayed the heading I had offset to avoid wake turbulence. Although I was starting my turn; I relayed the heading displayed and altitude; while I tried to maintain level flight from the wake turbulence. In my opinion; I never deviated from my clearance; I only delayed in starting my initial turn to the assigned heading to maintain level flight in the face of the B737 wake turbulence and gave a similar heading to the cleared heading. Departure must have assumed that I was in error and never questioned my heading or reason for the heading. I was informed of a problem over waco; by waco approach that I needed to call fort worth due to a possible pilot deviation. In the future; in order to avoid confusion; I must be very clear what my intentions are; and be very pro-active; even in high stress situations; to relay all movements to the appropriate frequency and to state intentions; ie; starting turn to assigned heading; instead of calling out a heading I happened to be on for offset.

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Original NASA ASRS Text

Title: PC12 PLT RPTS ENCOUNTERING WAKE TURBULENCE SHORTLY AFTER TKOF FROM DAL AND NOT TURNING TO ASSIGNED HDG WHILE TRYING TO AVOID A SECOND ENCOUNTER.

Narrative: I RECEIVED MY CLRNC FROM DAL LOVE CLRNC. CLRED TO AUSTIN INITIAL L TURN TO 185 DEGS HDG; RADAR VECTOR ACT-V17-DIRECT; CLB AND MAINTAIN 2000 FT AND EXPECT 8000 FT. WX OBTAINED FROM ATIS: 030/10 10 120000 SCT; 27000 SCT; 10/0 30.38 VIS APCH RWY 31L & RWY 31R. I WAS CLRED BY TWR FOR TKOF ON RWY 31R AND ADVISED OF WAKE TURBULENCE BEHIND A B737. I ACCEPTED THE TAKEOFF CLRNC AND STARTED MY TAKEOFF ROLL. UPON LIFTOFF I IMMEDIATELY EXPERIENCED WAKE TURBULENCE AND OFFSET MY HDG TO 285 DEGS FOR MY CLBOUT. CLOSE TO 2000 FT I WAS SWITCHED TO DEP FREQUENCY AND ADVISED THAT I WAS 2000 FT AND GAVE MY HDG AS 285 DEGS; I WAS TOLD TO CLB TO 3000 FT AND TURN TO 140 DEGS AND 'MOVE IT ON AROUND.' I DID AS REQUESTED AND CONTINUED ON THE FLT WITHOUT FURTHER INCIDENCE. I BELIEVE MY FAILURE TO START THE CLRNC TURN IMMEDIATELY TO 185 DEGS MAY HAVE CAUSED CONCERN FOR DEP CTL. I ALSO MADE A MISTAKE IN NOT STATING THAT I WAS IN THE TURN; I RELAYED THE HDG I HAD OFFSET TO AVOID WAKE TURBULENCE. ALTHOUGH I WAS STARTING MY TURN; I RELAYED THE HDG DISPLAYED AND ALTITUDE; WHILE I TRIED TO MAINTAIN LEVEL FLT FROM THE WAKE TURBULENCE. IN MY OPINION; I NEVER DEVIATED FROM MY CLRNC; I ONLY DELAYED IN STARTING MY INITIAL TURN TO THE ASSIGNED HDG TO MAINTAIN LEVEL FLT IN THE FACE OF THE B737 WAKE TURBULENCE AND GAVE A SIMILAR HDG TO THE CLRED HDG. DEP MUST HAVE ASSUMED THAT I WAS IN ERROR AND NEVER QUESTIONED MY HDG OR REASON FOR THE HDG. I WAS INFORMED OF A PROBLEM OVER WACO; BY WACO APCH THAT I NEEDED TO CALL FORT WORTH DUE TO A POSSIBLE PLT DEV. IN THE FUTURE; IN ORDER TO AVOID CONFUSION; I MUST BE VERY CLR WHAT MY INTENTIONS ARE; AND BE VERY PRO-ACTIVE; EVEN IN HIGH STRESS SITUATIONS; TO RELAY ALL MOVEMENTS TO THE APPROPRIATE FREQUENCY AND TO STATE INTENTIONS; IE; STARTING TURN TO ASSIGNED HEADING; INSTEAD OF CALLING OUT A HDG I HAPPENED TO BE ON FOR OFFSET.

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.