Narrative:

As PF, I briefed the arthur kill 2 departure as part of the takeoff brief. I inadvertently set heading 250 degrees vice 260 degrees in my crs window. After normal takeoff, I came left to 190 degree heading for 2.3 DME off ilsq runway 22R ILS then began right turn to heading 250 degrees. First officer noticed 250 degree heading incorrect during turn and reset 220 degrees instead of 260 degrees. He was looking at the newark 6 instead of arthur kill. Thinking I might have made a mistake in my brief, I turned back to 220 degrees until I could finish cleanup and verify for myself the correct heading on the departure page. The first officer checked in with N90 departure and advised him we were steady heading 220 degrees. About the time I noticed 260 degrees should have been our heading, N90 departure also noticed our heading, asked if we were on the arthur kill departure, then quickly told us to level off and turn to a 300 degree heading. It was a clear cloudless day. No conflicting traffic was noticed visually or on TCASII, but the controller advised us we were a potential conflict with lga traffic. His quick reaction prevented any conflict. Lessons learned: the heading error should have been caught in the brief and the problem would not have happened. Both pilots need to be thorough in the brief and confident of the departure plan. If sudden changes are made both pilots should agree and back each other up. Supplemental information from acn 397849: when he started the right turn to 250 degrees it struck me that that was the incorrect heading (I had flown the departure last week and read it before the checklist) and turned to quickly reread the departure. There are 2 adjacent foldout departure pages for ewr. On the front of one is the arthur kill, and the other is the ewr 6, which has the same exact procedure and NAVAID for the runway 22R departure, except that the ewr 6 calls for a 220 degree heading instead of a 260 degree heading. I wrongly read the ewr 6 and told the captain the heading is 220 degrees and he rolled out 220 degrees. Out of 5000 ft the controller asked if we were doing the arthur kill. I paused to rechk my pubs and he said, 'I'll take that as a no,' and told us to leveloff. I then realized my error and that I had told the captain the wrong heading.

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Original NASA ASRS Text

Title: AN S80 FLC TURNS TO THE WRONG HDG AFTER TKOF FROM EWR ON THE ARTHUR KILL SID DEP PROC. FO LOOKED AT EWR 6 DEP FOR HDG CONFIRMATION AFTER THE CAPT HAD UNDERSHOT THE REQUIRED HDG ON THE ARTHUR KILL.

Narrative: AS PF, I BRIEFED THE ARTHUR KILL 2 DEP AS PART OF THE TKOF BRIEF. I INADVERTENTLY SET HDG 250 DEGS VICE 260 DEGS IN MY CRS WINDOW. AFTER NORMAL TKOF, I CAME L TO 190 DEG HDG FOR 2.3 DME OFF ILSQ RWY 22R ILS THEN BEGAN R TURN TO HDG 250 DEGS. FO NOTICED 250 DEG HDG INCORRECT DURING TURN AND RESET 220 DEGS INSTEAD OF 260 DEGS. HE WAS LOOKING AT THE NEWARK 6 INSTEAD OF ARTHUR KILL. THINKING I MIGHT HAVE MADE A MISTAKE IN MY BRIEF, I TURNED BACK TO 220 DEGS UNTIL I COULD FINISH CLEANUP AND VERIFY FOR MYSELF THE CORRECT HDG ON THE DEP PAGE. THE FO CHKED IN WITH N90 DEP AND ADVISED HIM WE WERE STEADY HDG 220 DEGS. ABOUT THE TIME I NOTICED 260 DEGS SHOULD HAVE BEEN OUR HDG, N90 DEP ALSO NOTICED OUR HDG, ASKED IF WE WERE ON THE ARTHUR KILL DEP, THEN QUICKLY TOLD US TO LEVEL OFF AND TURN TO A 300 DEG HDG. IT WAS A CLR CLOUDLESS DAY. NO CONFLICTING TFC WAS NOTICED VISUALLY OR ON TCASII, BUT THE CTLR ADVISED US WE WERE A POTENTIAL CONFLICT WITH LGA TFC. HIS QUICK REACTION PREVENTED ANY CONFLICT. LESSONS LEARNED: THE HDG ERROR SHOULD HAVE BEEN CAUGHT IN THE BRIEF AND THE PROB WOULD NOT HAVE HAPPENED. BOTH PLTS NEED TO BE THOROUGH IN THE BRIEF AND CONFIDENT OF THE DEP PLAN. IF SUDDEN CHANGES ARE MADE BOTH PLTS SHOULD AGREE AND BACK EACH OTHER UP. SUPPLEMENTAL INFO FROM ACN 397849: WHEN HE STARTED THE R TURN TO 250 DEGS IT STRUCK ME THAT THAT WAS THE INCORRECT HDG (I HAD FLOWN THE DEP LAST WK AND READ IT BEFORE THE CHKLIST) AND TURNED TO QUICKLY REREAD THE DEP. THERE ARE 2 ADJACENT FOLDOUT DEP PAGES FOR EWR. ON THE FRONT OF ONE IS THE ARTHUR KILL, AND THE OTHER IS THE EWR 6, WHICH HAS THE SAME EXACT PROC AND NAVAID FOR THE RWY 22R DEP, EXCEPT THAT THE EWR 6 CALLS FOR A 220 DEG HDG INSTEAD OF A 260 DEG HDG. I WRONGLY READ THE EWR 6 AND TOLD THE CAPT THE HDG IS 220 DEGS AND HE ROLLED OUT 220 DEGS. OUT OF 5000 FT THE CTLR ASKED IF WE WERE DOING THE ARTHUR KILL. I PAUSED TO RECHK MY PUBS AND HE SAID, 'I'LL TAKE THAT AS A NO,' AND TOLD US TO LEVELOFF. I THEN REALIZED MY ERROR AND THAT I HAD TOLD THE CAPT THE WRONG HDG.

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.