Abort takeoff when takeoff warning horn sounded.

Attributes
ACN	158581
Time
Date	199009
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cmh
State Reference	OH
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : orf
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 : 60 flight time total : 15000 flight time type : 60
ASRS Report	158581
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

During taxi out, received weight and balance showing stabilizer trim setting of 5.9, near upper limit of green band. First officer set trim on right side of console and I verified it on left side. When thrust levers were advanced for takeoff, warning horn sounded. Disconnected autothrottles, power to idle and taxied clear at first intersection. Maximum speed approximately 20 KTS. Found that captain trim indicator was worn off making it appear that less than actual. Reset trim, checked warning horn, then took off. Wrote up trim indicators on arrival lax.

Original NASA ASRS Text

Title: ABORT TKOF WHEN TKOF WARNING HORN SOUNDED.

Narrative: DURING TAXI OUT, RECEIVED WEIGHT AND BALANCE SHOWING STAB TRIM SETTING OF 5.9, NEAR UPPER LIMIT OF GREEN BAND. F/O SET TRIM ON R SIDE OF CONSOLE AND I VERIFIED IT ON L SIDE. WHEN THRUST LEVERS WERE ADVANCED FOR TKOF, WARNING HORN SOUNDED. DISCONNECTED AUTOTHROTTLES, PWR TO IDLE AND TAXIED CLR AT FIRST INTXN. MAX SPD APPROX 20 KTS. FOUND THAT CAPT TRIM INDICATOR WAS WORN OFF MAKING IT APPEAR THAT LESS THAN ACTUAL. RESET TRIM, CHKED WARNING HORN, THEN TOOK OFF. WROTE UP TRIM INDICATORS ON ARR LAX.

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.