Takeoff abort. - NASA ASRS

Attributes
ACN	156580
Time
Date	199009
Day	Thu
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : rdu
State Reference	NC
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	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : takeoff other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 5500 flight time type : 1200
ASRS Report	156580
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
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 : overcame equipment problem flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

When advancing power for takeoff, the takeoff warning horn sounded. Takeoff discontinued and cleared runway to investigate. All configns were checked ok. However, takeoff trim was well into green zone for flaps 15 degrees takeoff (set 3.9 units) when horn came on. Reset trim to 4.0-4.1 and warning horn stopped. This was a false takeoff warning with flaps 15, spdbrake retracted fully, parking brake and APU-off, but stabilizer takeoff trim near low end of range. Trim was reset to 4.0 and takeoff was uneventful.

Original NASA ASRS Text

Title: TKOF ABORT.

Narrative: WHEN ADVANCING PWR FOR TKOF, THE TKOF WARNING HORN SOUNDED. TKOF DISCONTINUED AND CLRED RWY TO INVESTIGATE. ALL CONFIGNS WERE CHKED OK. HOWEVER, TKOF TRIM WAS WELL INTO GREEN ZONE FOR FLAPS 15 DEGS TKOF (SET 3.9 UNITS) WHEN HORN CAME ON. RESET TRIM TO 4.0-4.1 AND WARNING HORN STOPPED. THIS WAS A FALSE TKOF WARNING WITH FLAPS 15, SPDBRAKE RETRACTED FULLY, PARKING BRAKE AND APU-OFF, BUT STAB TKOF TRIM NEAR LOW END OF RANGE. TRIM WAS RESET TO 4.0 AND TKOF WAS UNEVENTFUL.

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.