Wrong flap setting causes aborted takeoff.

Attributes
ACN	256995
Time
Date	199311
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : den
State Reference	CO
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	Any Unknown or Unlisted Aircraft Manufacturer
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 : 150 flight time total : 9000 flight time type : 750
ASRS Report	256995
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : rejected takeoff
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Taxiing out for a night takeoff, the first officer selected an improper flap setting. After being cleared for takeoff throttles were advanced and takeoff warning horn sounded. We taxied clear of the runway, corrected the problem and continued the flight. Contributing factors: 1) company policy of completing checklists on the move to save time seriously divides the captain's attention. 2) aircraft differences. Flap setting chosen by first officer is the preferred setting for 98 percent of all line takeoffs on this fleet. Aircraft in question is one of the few left to be modified. Corrective actions: complete all checklists while stationary, particularly at night.

Original NASA ASRS Text

Title: WRONG FLAP SETTING CAUSES ABORTED TKOF.

Narrative: TAXIING OUT FOR A NIGHT TKOF, THE FO SELECTED AN IMPROPER FLAP SETTING. AFTER BEING CLRED FOR TKOF THROTTLES WERE ADVANCED AND TKOF WARNING HORN SOUNDED. WE TAXIED CLR OF THE RWY, CORRECTED THE PROB AND CONTINUED THE FLT. CONTRIBUTING FACTORS: 1) COMPANY POLICY OF COMPLETING CHKLISTS ON THE MOVE TO SAVE TIME SERIOUSLY DIVIDES THE CAPT'S ATTN. 2) ACFT DIFFERENCES. FLAP SETTING CHOSEN BY FO IS THE PREFERRED SETTING FOR 98 PERCENT OF ALL LINE TKOFS ON THIS FLEET. ACFT IN QUESTION IS ONE OF THE FEW LEFT TO BE MODIFIED. CORRECTIVE ACTIONS: COMPLETE ALL CHKLISTS WHILE STATIONARY, PARTICULARLY AT NIGHT.

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.