Narrative:

During taxi out, the first officer and I prepared for takeoff from runway 5L as advised by ground control on initial taxi instructions. Performance calculations were made for runway 5L. At the last min, as we approached the intersection of runway 5R where we were to cross and proceed to runway 5L, we were given a change of instructions. At that point we were cleared for an intersection takeoff on runway 5R. We also think we may have been given an initial heading to fly after takeoff, but neither of us is sure of this. This sudden change necessitated some quick rebriefing and performance considerations and calculation with additional conversation. After takeoff, I flew the runway, heading and when we switched to departure, the first thing he said was, 'what was your tower assigned heading?' the first officer responded that it was runway heading, but after a few mins of trying to recollect, neither of us was 100% sure of the heading assignment given with the takeoff clearance. Nothing more was said to us about that by departure control. In retrospect, when given a sudden change of directions and clearance, I feel this should be the time to actively slow yourself down so as not to miss items or make mistakes. As always, any rush to accomplish tasks is ripe with opportunity for error. Again, I'm not sure we did incorrectly fly the initial takeoff. This report is submitted as a lesson learned.

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Original NASA ASRS Text

Title: MLG CREW HAD TRACK DEV.

Narrative: DURING TAXI OUT, THE FO AND I PREPARED FOR TKOF FROM RWY 5L AS ADVISED BY GND CTL ON INITIAL TAXI INSTRUCTIONS. PERFORMANCE CALCULATIONS WERE MADE FOR RWY 5L. AT THE LAST MIN, AS WE APCHED THE INTXN OF RWY 5R WHERE WE WERE TO CROSS AND PROCEED TO RWY 5L, WE WERE GIVEN A CHANGE OF INSTRUCTIONS. AT THAT POINT WE WERE CLRED FOR AN INTXN TKOF ON RWY 5R. WE ALSO THINK WE MAY HAVE BEEN GIVEN AN INITIAL HDG TO FLY AFTER TKOF, BUT NEITHER OF US IS SURE OF THIS. THIS SUDDEN CHANGE NECESSITATED SOME QUICK REBRIEFING AND PERFORMANCE CONSIDERATIONS AND CALCULATION WITH ADDITIONAL CONVERSATION. AFTER TKOF, I FLEW THE RWY, HDG AND WHEN WE SWITCHED TO DEP, THE FIRST THING HE SAID WAS, 'WHAT WAS YOUR TWR ASSIGNED HDG?' THE FO RESPONDED THAT IT WAS RWY HDG, BUT AFTER A FEW MINS OF TRYING TO RECOLLECT, NEITHER OF US WAS 100% SURE OF THE HDG ASSIGNMENT GIVEN WITH THE TKOF CLRNC. NOTHING MORE WAS SAID TO US ABOUT THAT BY DEP CTL. IN RETROSPECT, WHEN GIVEN A SUDDEN CHANGE OF DIRECTIONS AND CLRNC, I FEEL THIS SHOULD BE THE TIME TO ACTIVELY SLOW YOURSELF DOWN SO AS NOT TO MISS ITEMS OR MAKE MISTAKES. AS ALWAYS, ANY RUSH TO ACCOMPLISH TASKS IS RIPE WITH OPPORTUNITY FOR ERROR. AGAIN, I'M NOT SURE WE DID INCORRECTLY FLY THE INITIAL TKOF. THIS RPT IS SUBMITTED AS A LESSON LEARNED.

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.