A B737 flight crew fails to set their flaps for takeoff and, after receiving the warning horn, set the flaps to the required position while rolling down the runway with reduced power at ord, il.

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Attributes
ACN	535407
Time
Date	200201
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : ord.airport
State Reference	IL
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ord.tower tower : hut.tower
Operator	common carrier : air carrier
Make Model Name	B737-500
Operating Under FAR Part	Part 121
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 250 flight time total : 8000 flight time type : 3000
ASRS Report	535407
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : flight engineer pilot : multi engine pilot : atp
Experience	flight time last 90 days : 250 flight time total : 8000 flight time type : 3000
ASRS Report	535407
Events
Anomaly	aircraft equipment problem : critical non adherence : published procedure non adherence : far non adherence : company policies non adherence other other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : tkof confign warn horn
Resolutory Action	other
Consequence	Other
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Flight Crew Human Performance

Narrative:

While taxiing for takeoff, due to the complexities of ord airport and due to the fact that we were not properly observing sterile cockpit procedures (idle conversation during taxi), we did not perform the taxi checklist. Thus, we did not set flaps for takeoff. When cleared for takeoff, I pushed up the throttles and got a takeoff warning horn. The captain noticed the flaps were not set for takeoff, and immediately set the flap handle. By this time we were rolling down the runway, and it took time to position the flaps before I would advance to takeoff power. As it was a long runway, and we were not at maximum takeoff weight, we continued the takeoff uneventfully. However, we made 3 mistakes: 1) we should have observed sterile cockpit, and not have been distraction. 2) we should have completed the taxi checklist. 3) when we heard the takeoff warning horn we should have aborted the takeoff. Very important lessons learned!

Original NASA ASRS Text

Title: A B737 FLC FAILS TO SET THEIR FLAPS FOR TKOF AND, AFTER RECEIVING THE WARNING HORN, SET THE FLAPS TO THE REQUIRED POS WHILE ROLLING DOWN THE RWY WITH REDUCED PWR AT ORD, IL.

Narrative: WHILE TAXIING FOR TKOF, DUE TO THE COMPLEXITIES OF ORD ARPT AND DUE TO THE FACT THAT WE WERE NOT PROPERLY OBSERVING STERILE COCKPIT PROCS (IDLE CONVERSATION DURING TAXI), WE DID NOT PERFORM THE TAXI CHKLIST. THUS, WE DID NOT SET FLAPS FOR TKOF. WHEN CLRED FOR TKOF, I PUSHED UP THE THROTTLES AND GOT A TKOF WARNING HORN. THE CAPT NOTICED THE FLAPS WERE NOT SET FOR TKOF, AND IMMEDIATELY SET THE FLAP HANDLE. BY THIS TIME WE WERE ROLLING DOWN THE RWY, AND IT TOOK TIME TO POS THE FLAPS BEFORE I WOULD ADVANCE TO TKOF PWR. AS IT WAS A LONG RWY, AND WE WERE NOT AT MAX TKOF WT, WE CONTINUED THE TKOF UNEVENTFULLY. HOWEVER, WE MADE 3 MISTAKES: 1) WE SHOULD HAVE OBSERVED STERILE COCKPIT, AND NOT HAVE BEEN DISTR. 2) WE SHOULD HAVE COMPLETED THE TAXI CHKLIST. 3) WHEN WE HEARD THE TKOF WARNING HORN WE SHOULD HAVE ABORTED THE TKOF. VERY IMPORTANT LESSONS LEARNED!

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.