Narrative:

Runway 25 phoenix holding short. Taxi checklist completed. I asked co-captain to brief departure. We briefed then we were cleared for takeoff. At 1500 ft co-captain says at 15500 ft turn to 075 degrees. I replied, 'I don't think that's what you briefed, check it again.' he replied, 'you're right, it's 1550 ft. He sounded confused. I asked him to read it again. I began my turn through 140 degrees. He says I was wrong it is 240 degrees. I read the wrong runway departure. I immediately began the turn back to 240 degrees. At 220 degrees, the controller called 'where are you going?' co-captain replied, 'I was turning to 075 degrees. I read the wrong departure.' the controller then instructed us to turn to 210 degrees and level off at 6000 ft. I then turned back to the left to 110 degrees. The next call we were instructed to call the watch supervisor. We had no conflicts, however we were turning the wrong way initially. Human considerations: it had been a long day. It was leg #4. I had confidence in my co-captain when he briefed the departure, so initially I did not question the brief. At 1500 ft we did discover the confusion. I queried my co-captain, and we began correction, but it should have been sooner.

Google
 

Original NASA ASRS Text

Title: A BE400 CREW, DEPARTING PHX, TURNED TO THE WRONG HEADING, REQUIRING CORRECTIVE VECTORS FROM ATC.

Narrative: RWY 25 PHOENIX HOLDING SHORT. TAXI CHKLIST COMPLETED. I ASKED CO-CAPT TO BRIEF DEP. WE BRIEFED THEN WE WERE CLRED FOR TKOF. AT 1500 FT CO-CAPT SAYS AT 15500 FT TURN TO 075 DEGS. I REPLIED, 'I DON'T THINK THAT'S WHAT YOU BRIEFED, CHK IT AGAIN.' HE REPLIED, 'YOU'RE RIGHT, IT'S 1550 FT. HE SOUNDED CONFUSED. I ASKED HIM TO READ IT AGAIN. I BEGAN MY TURN THROUGH 140 DEGS. HE SAYS I WAS WRONG IT IS 240 DEGS. I READ THE WRONG RWY DEP. I IMMEDIATELY BEGAN THE TURN BACK TO 240 DEGS. AT 220 DEGS, THE CTLR CALLED 'WHERE ARE YOU GOING?' CO-CAPT REPLIED, 'I WAS TURNING TO 075 DEGS. I READ THE WRONG DEP.' THE CTLR THEN INSTRUCTED US TO TURN TO 210 DEGS AND LEVEL OFF AT 6000 FT. I THEN TURNED BACK TO THE L TO 110 DEGS. THE NEXT CALL WE WERE INSTRUCTED TO CALL THE WATCH SUPVR. WE HAD NO CONFLICTS, HOWEVER WE WERE TURNING THE WRONG WAY INITIALLY. HUMAN CONSIDERATIONS: IT HAD BEEN A LONG DAY. IT WAS LEG #4. I HAD CONFIDENCE IN MY CO-CAPT WHEN HE BRIEFED THE DEP, SO INITIALLY I DID NOT QUESTION THE BRIEF. AT 1500 FT WE DID DISCOVER THE CONFUSION. I QUERIED MY CO-CAPT, AND WE BEGAN CORRECTION, BUT IT SHOULD HAVE BEEN SOONER.

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.