Narrative:

Cleared for takeoff on runway 1 but when taxiing into position failed to turn far enough and lined up and took off on runway 35L. Runway ends are co-located and the close magnetic direction makes it very easy to line up wrong. Runway 35L is the first runway you see when lining up. Could have better markings/lighted signs or possibly a stub taxiway that goes directly to runway 1. Additional factors: pilots were on the 3RD of 3 very long days with numerous WX and ATC delays. Certainly fatigue was a factor.

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Original NASA ASRS Text

Title: ACR MLG PERFORMED A WRONG RWY TKOF DURING A NIGHT OP AT SDF, KY.

Narrative: CLRED FOR TKOF ON RWY 1 BUT WHEN TAXIING INTO POS FAILED TO TURN FAR ENOUGH AND LINED UP AND TOOK OFF ON RWY 35L. RWY ENDS ARE CO-LOCATED AND THE CLOSE MAGNETIC DIRECTION MAKES IT VERY EASY TO LINE UP WRONG. RWY 35L IS THE FIRST RWY YOU SEE WHEN LINING UP. COULD HAVE BETTER MARKINGS/LIGHTED SIGNS OR POSSIBLY A STUB TXWY THAT GOES DIRECTLY TO RWY 1. ADDITIONAL FACTORS: PLTS WERE ON THE 3RD OF 3 VERY LONG DAYS WITH NUMEROUS WX AND ATC DELAYS. CERTAINLY FATIGUE WAS A FACTOR.

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.