Air carrier aborts takeoff upon hearing warning horn.

Attributes
ACN	193976
Time
Date	199110
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : phl
State Reference	PA
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
Experience	flight time last 90 days : 235 flight time total : 12500 flight time type : 3500
ASRS Report	193976
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	non adherence : published procedure non adherence other other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Taxi out for takeoff on 1 engine. Upon arrival at end of runway we were cleared to takeoff ahead of other aircraft, but completed startup of other engine in sufficient time to complete checklist in demand-response mode. As I pushed throttles up, we got takeoff warning horn, exited runway to discover flaps incorrectly set. PNF had read checklist and I responded, but he omitted the flap item and I didn't notice it as he read checklist. Even reading checklist can produce undesired results, if there are not subjective backups.

Original NASA ASRS Text

Title: ACR ABORTS TKOF UPON HEARING WARNING HORN.

Narrative: TAXI OUT FOR TKOF ON 1 ENG. UPON ARR AT END OF RWY WE WERE CLRED TO TKOF AHEAD OF OTHER ACFT, BUT COMPLETED STARTUP OF OTHER ENG IN SUFFICIENT TIME TO COMPLETE CHKLIST IN DEMAND-RESPONSE MODE. AS I PUSHED THROTTLES UP, WE GOT TKOF WARNING HORN, EXITED RWY TO DISCOVER FLAPS INCORRECTLY SET. PNF HAD READ CHKLIST AND I RESPONDED, BUT HE OMITTED THE FLAP ITEM AND I DIDN'T NOTICE IT AS HE READ CHKLIST. EVEN READING CHKLIST CAN PRODUCE UNDESIRED RESULTS, IF THERE ARE NOT SUBJECTIVE BACKUPS.

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.