Narrative:

On departure out of phx, az, on the buck eye 2 departure from runway 26L, the departure states 'after takeoff fly heading 240 degrees to 4 DME fix from pxr, climb through 3000 ft, then at the 13 DME fix turn right heading 280 degrees.' what I had done was, when I passed the 4 DME fix then after passing 3000 ft, I proceeded to make the right turn to 280 degrees early. After the turn I looked again at the procedure to double-check when I got a call from departure asking what my heading was. I reported 280 degrees. The controller said to immediately turn heading 240 degrees, traffic departed runway 26R was a B757. I saw the traffic and I also noted that the TCASII that we have on board had not given any advisories. I also saw the traffic on TCASII. I should have been more familiar with the departure, spent more time on the ground before takeoff to make sure I understood the details. I let the heat on the ground push me into departing before I was ready. It was a hot day, I was sweating and my passenger were complaining about the air conditioner not working so well. I know exactly what I did wrong. I was fully at fault. One thing I am concerned about is why didn't my TCASII warn me of the close proximity of the B757? Control said that he was less than 3 mi.

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Original NASA ASRS Text

Title: ACFT UNKNOWN. DEP SID RPTR PLT TURNED TOO EARLY TO HDG. CTLR INTERVENED IMMEDIATELY TO TURN RPTR ACFT AWAY FROM DEPARTING B757 WHICH HAD TAKEN OFF FROM A PARALLEL RWY.

Narrative: ON DEP OUT OF PHX, AZ, ON THE BUCK EYE 2 DEP FROM RWY 26L, THE DEP STATES 'AFTER TKOF FLY HDG 240 DEGS TO 4 DME FIX FROM PXR, CLB THROUGH 3000 FT, THEN AT THE 13 DME FIX TURN R HDG 280 DEGS.' WHAT I HAD DONE WAS, WHEN I PASSED THE 4 DME FIX THEN AFTER PASSING 3000 FT, I PROCEEDED TO MAKE THE R TURN TO 280 DEGS EARLY. AFTER THE TURN I LOOKED AGAIN AT THE PROC TO DOUBLE-CHK WHEN I GOT A CALL FROM DEP ASKING WHAT MY HDG WAS. I RPTED 280 DEGS. THE CTLR SAID TO IMMEDIATELY TURN HDG 240 DEGS, TFC DEPARTED RWY 26R WAS A B757. I SAW THE TFC AND I ALSO NOTED THAT THE TCASII THAT WE HAVE ON BOARD HAD NOT GIVEN ANY ADVISORIES. I ALSO SAW THE TFC ON TCASII. I SHOULD HAVE BEEN MORE FAMILIAR WITH THE DEP, SPENT MORE TIME ON THE GND BEFORE TKOF TO MAKE SURE I UNDERSTOOD THE DETAILS. I LET THE HEAT ON THE GND PUSH ME INTO DEPARTING BEFORE I WAS READY. IT WAS A HOT DAY, I WAS SWEATING AND MY PAX WERE COMPLAINING ABOUT THE AIR CONDITIONER NOT WORKING SO WELL. I KNOW EXACTLY WHAT I DID WRONG. I WAS FULLY AT FAULT. ONE THING I AM CONCERNED ABOUT IS WHY DIDN'T MY TCASII WARN ME OF THE CLOSE PROX OF THE B757? CTL SAID THAT HE WAS LESS THAN 3 MI.

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.