Medium large transport aborts takeoff when warning horn sounds.

Attributes
ACN	224529
Time
Date	199210
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : den
State Reference	CO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 190 flight time total : 11800 flight time type : 2300
ASRS Report	224529
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Events
Anomaly	non adherence : published procedure other anomaly other
Independent Detector	other other : unspecified
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Upon application of takeoff power, takeoff warning horn sounded. Taxied clear of runway. Cycled flaps and spdbrakes, reset stabilizer trim, checked parking brake linkage released, and checked circuit breakers. After talking to maintenance on radio, returned to gate. Maintenance found takeoff flaps in position 1, which is not approved on medium large transport X. Flaps 1 is the normal takeoff setting on medium large transport Y. I have corrected, on taxi-out, this inadvertent flap setting by a first officer several times in the past. But neither of us could see it this time -- too obvious.

Original NASA ASRS Text

Title: MLG ABORTS TKOF WHEN WARNING HORN SOUNDS.

Narrative: UPON APPLICATION OF TKOF PWR, TKOF WARNING HORN SOUNDED. TAXIED CLR OF RWY. CYCLED FLAPS AND SPDBRAKES, RESET STABILIZER TRIM, CHKED PARKING BRAKE LINKAGE RELEASED, AND CHKED CIRCUIT BREAKERS. AFTER TALKING TO MAINT ON RADIO, RETURNED TO GATE. MAINT FOUND TKOF FLAPS IN POS 1, WHICH IS NOT APPROVED ON MLG X. FLAPS 1 IS THE NORMAL TKOF SETTING ON MLG Y. I HAVE CORRECTED, ON TAXI-OUT, THIS INADVERTENT FLAP SETTING BY A FO SEVERAL TIMES IN THE PAST. BUT NEITHER OF US COULD SEE IT THIS TIME -- TOO OBVIOUS.

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.