Narrative:

Unfamiliar with airport, requested progressive taxi to run-up area for departure. Held short of runway for run-up while another aircraft departed left to right. Cleared to depart runway 8, I followed the taxi line to center of runway via right turn/curve, and departed. Departure was from midpoint of runway 17R. Discussed with controller afterward and he indicated that since there was no other traffic, he allowed me to depart rather than terminate my rollout. That was nice to know he was on top of it. Contributing factors and human performance considerations: this incident was 100% pilot error (mine). Fatigue was the overriding factor. Unfamiliarity with the airport resulting in reliance on progressive taxi instructions meant I was at the run-up area without knowledge of the airport layout, not realizing the runway layout. Fatigue with the aircraft departing before me left to right gave me the mental image that I would depart to the right hence the right turn onto runway. Inactions: learning airport layout and following signs (I took an aviation safety seminar on airport signs within the yr so no excuses). Not xchking directional gyroscope (heading) prior to departure (would have shown 170 degrees). Did I mention fatigue as I was 3 hours into a 5 hour flight, with no autoplt.

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Original NASA ASRS Text

Title: MOONEY M20 PLT MAKES WRONG RWY TKOF AFTER BEING CLRED FOR TKOF DUE TO UNFAMILIARITY WITH ARPT AND FOLLOWING ANOTHER ACFT THAT HAD JUST TAKEN OFF.

Narrative: UNFAMILIAR WITH ARPT, REQUESTED PROGRESSIVE TAXI TO RUN-UP AREA FOR DEP. HELD SHORT OF RWY FOR RUN-UP WHILE ANOTHER ACFT DEPARTED L TO R. CLRED TO DEPART RWY 8, I FOLLOWED THE TAXI LINE TO CTR OF RWY VIA R TURN/CURVE, AND DEPARTED. DEP WAS FROM MIDPOINT OF RWY 17R. DISCUSSED WITH CTLR AFTERWARD AND HE INDICATED THAT SINCE THERE WAS NO OTHER TFC, HE ALLOWED ME TO DEPART RATHER THAN TERMINATE MY ROLLOUT. THAT WAS NICE TO KNOW HE WAS ON TOP OF IT. CONTRIBUTING FACTORS AND HUMAN PERFORMANCE CONSIDERATIONS: THIS INCIDENT WAS 100% PLT ERROR (MINE). FATIGUE WAS THE OVERRIDING FACTOR. UNFAMILIARITY WITH THE ARPT RESULTING IN RELIANCE ON PROGRESSIVE TAXI INSTRUCTIONS MEANT I WAS AT THE RUN-UP AREA WITHOUT KNOWLEDGE OF THE ARPT LAYOUT, NOT REALIZING THE RWY LAYOUT. FATIGUE WITH THE ACFT DEPARTING BEFORE ME L TO R GAVE ME THE MENTAL IMAGE THAT I WOULD DEPART TO THE R HENCE THE R TURN ONTO RWY. INACTIONS: LEARNING ARPT LAYOUT AND FOLLOWING SIGNS (I TOOK AN AVIATION SAFETY SEMINAR ON ARPT SIGNS WITHIN THE YR SO NO EXCUSES). NOT XCHKING DIRECTIONAL GYROSCOPE (HEADING) PRIOR TO DEP (WOULD HAVE SHOWN 170 DEGS). DID I MENTION FATIGUE AS I WAS 3 HRS INTO A 5 HR FLT, WITH NO AUTOPLT.

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.