Flight crew hears takeoff warning horn when power levers are advanced, and aborts takeoff.

Attributes
ACN	113395
Time
Date	198906
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : oak
State Reference	CA
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 : flight engineer pilot : atp
Experience	flight time last 90 days : 200 flight time total : 8000 flight time type : 400
ASRS Report	113395
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : overcame equipment problem flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

After being cleared for takeoff by tower I moved the throttles forward and immediately received a takeoff warning horn. As the takeoff trim setting was near the full aft limit, I moved it forward slightly thinking the limit may have been exceeded. I again moved the throttles forward and again got the takeoff warning horn. At this time I elected to exit the runway about 1000' down, as I could not turn off where I entered as there were other aircraft awaiting takeoff clearance. After exiting the runway I discovered the flap position circuit breaker (directly behind the first officer's head) and open. I reset the breaker, repeated the takeoff checklist and took off uneventfully. I suspect that upon completion of the previous leg, the first officer released his shoulder straps, and they sprung back and opened the circuit breaker.

Original NASA ASRS Text

Title: FLT CREW HEARS TKOF WARNING HORN WHEN POWER LEVERS ARE ADVANCED, AND ABORTS TKOF.

Narrative: AFTER BEING CLRED FOR TKOF BY TWR I MOVED THE THROTTLES FORWARD AND IMMEDIATELY RECEIVED A TKOF WARNING HORN. AS THE TKOF TRIM SETTING WAS NEAR THE FULL AFT LIMIT, I MOVED IT FORWARD SLIGHTLY THINKING THE LIMIT MAY HAVE BEEN EXCEEDED. I AGAIN MOVED THE THROTTLES FORWARD AND AGAIN GOT THE TKOF WARNING HORN. AT THIS TIME I ELECTED TO EXIT THE RWY ABOUT 1000' DOWN, AS I COULD NOT TURN OFF WHERE I ENTERED AS THERE WERE OTHER ACFT AWAITING TKOF CLRNC. AFTER EXITING THE RWY I DISCOVERED THE FLAP POSITION CIRCUIT BREAKER (DIRECTLY BEHIND THE F/O'S HEAD) AND OPEN. I RESET THE BREAKER, REPEATED THE TKOF CHECKLIST AND TOOK OFF UNEVENTFULLY. I SUSPECT THAT UPON COMPLETION OF THE PREVIOUS LEG, THE F/O RELEASED HIS SHOULDER STRAPS, AND THEY SPRUNG BACK AND OPENED THE CIRCUIT BREAKER.

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.