Flight crew attempts taxiway takeoff and tower controller intervenes.

Attributes
ACN	113578
Time
Date	198906
Day	Wed
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : takeoff ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 4500 flight time type : 2700
ASRS Report	113578
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : far non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Previously flew jax-ord, then attempted to fly ord-sat, but was unable to penetrate line of thunderstorms stretching from iah to south of sat. Also encountered severe turbulence so we diverted to dfw. We departed gate at dfw for sat. We were cleared for takeoff on runway 18L at dfw while taxiing on taxiway G (inner). Turned the corner at the end and lined up on green taxi centerline lights of taxiway F (outer). Neither the captain nor the copilot (who was making the takeoff) caught the mistake and takeoff was commenced. Prior to reaching full power, tower cancelled takeoff clearance and informed us we were on a taxiway. Reclred to takeoff on runway 18L and the flight proceeded uneventfully to sat. I believe this incident occurred as a result of fatigue. We were already on duty over 12 hours when it happened and were not too alert. Also contributing to the problem was our apprehension about the thunderstorms that were still in the area, especially after encountering severe turbulence on the previous leg, which was very unnerving in itself.

Original NASA ASRS Text

Title: FLT CREW ATTEMPTS TXWY TKOF AND TWR CTLR INTERVENES.

Narrative: PREVIOUSLY FLEW JAX-ORD, THEN ATTEMPTED TO FLY ORD-SAT, BUT WAS UNABLE TO PENETRATE LINE OF TSTMS STRETCHING FROM IAH TO SOUTH OF SAT. ALSO ENCOUNTERED SEVERE TURBULENCE SO WE DIVERTED TO DFW. WE DEPARTED GATE AT DFW FOR SAT. WE WERE CLRED FOR TKOF ON RWY 18L AT DFW WHILE TAXIING ON TXWY G (INNER). TURNED THE CORNER AT THE END AND LINED UP ON GREEN TAXI CENTERLINE LIGHTS OF TXWY F (OUTER). NEITHER THE CAPT NOR THE COPLT (WHO WAS MAKING THE TKOF) CAUGHT THE MISTAKE AND TKOF WAS COMMENCED. PRIOR TO REACHING FULL POWER, TWR CANCELLED TKOF CLRNC AND INFORMED US WE WERE ON A TXWY. RECLRED TO TKOF ON RWY 18L AND THE FLT PROCEEDED UNEVENTFULLY TO SAT. I BELIEVE THIS INCIDENT OCCURRED AS A RESULT OF FATIGUE. WE WERE ALREADY ON DUTY OVER 12 HOURS WHEN IT HAPPENED AND WERE NOT TOO ALERT. ALSO CONTRIBUTING TO THE PROBLEM WAS OUR APPREHENSION ABOUT THE TSTMS THAT WERE STILL IN THE AREA, ESPECIALLY AFTER ENCOUNTERING SEVERE TURBULENCE ON THE PREVIOUS LEG, WHICH WAS VERY UNNERVING IN ITSELF.

Data retrieved from NASA's ASRS site as of August 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.