Air carrier medium large transport started takeoff with flaps retracted. Warning horn caused flight ...

Attributes
ACN	161244
Time
Date	199010
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : phx
State Reference	AZ
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 : cfi pilot : flight engineer pilot : instrument pilot : atp
Experience	flight time last 90 days : 200 flight time total : 5000 flight time type : 2000
ASRS Report	161244
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 175 flight time total : 10000 flight time type : 500
ASRS Report	161603
Events
Anomaly	non adherence : far non adherence : published procedure 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:

We took the runway, were cleared for takeoff and added power. The confign horn sounded. I realized the flaps were up and pulled the power back. We never exceeded 20 KTS. We had completely forgotten the before takeoff checklist! We rest the flaps and subsequently departed. I don't know why we forgot the checklist. Thank god for confign warning horns. All I can think is that the company recently redid the checklist structure, moving many items from the before takeoff to the after start checklist. Perhaps subconsciously I had noticed things complete (from the after start) that in 5 yrs on the medium large transport I had come to associate with the before takeoff, and had deluded myself into thinking the before takeoff checklist was done. Fortunately, the horn worked. Supplemental information from acn 161603: during cleanup procedures we discovered flaps 1 instead of 5 degrees as required on medium large transport. There needs to be more better cockpit definition between the medium large transport model a and model B aircraft.

Original NASA ASRS Text

Title: ACR MLG STARTED TKOF WITH FLAPS RETRACTED. WARNING HORN CAUSED FLT CREW TO ABORT.

Narrative: WE TOOK THE RWY, WERE CLRED FOR TKOF AND ADDED PWR. THE CONFIGN HORN SOUNDED. I REALIZED THE FLAPS WERE UP AND PULLED THE PWR BACK. WE NEVER EXCEEDED 20 KTS. WE HAD COMPLETELY FORGOTTEN THE BEFORE TKOF CHKLIST! WE REST THE FLAPS AND SUBSEQUENTLY DEPARTED. I DON'T KNOW WHY WE FORGOT THE CHKLIST. THANK GOD FOR CONFIGN WARNING HORNS. ALL I CAN THINK IS THAT THE COMPANY RECENTLY REDID THE CHKLIST STRUCTURE, MOVING MANY ITEMS FROM THE BEFORE TKOF TO THE AFTER START CHKLIST. PERHAPS SUBCONSCIOUSLY I HAD NOTICED THINGS COMPLETE (FROM THE AFTER START) THAT IN 5 YRS ON THE MLG I HAD COME TO ASSOCIATE WITH THE BEFORE TKOF, AND HAD DELUDED MYSELF INTO THINKING THE BEFORE TKOF CHKLIST WAS DONE. FORTUNATELY, THE HORN WORKED. SUPPLEMENTAL INFO FROM ACN 161603: DURING CLEANUP PROCS WE DISCOVERED FLAPS 1 INSTEAD OF 5 DEGS AS REQUIRED ON MLG. THERE NEEDS TO BE MORE BETTER COCKPIT DEFINITION BTWN THE MLG MODEL A AND MODEL B ACFT.

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.

Air carrier medium large transport started takeoff with flaps retracted. Warning horn caused flight crew to abort.