A B737-200 crew departing mci started takeoff roll without being cleared for takeoff.

Attributes
ACN	529674
Time
Date	200111
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : mci.airport
State Reference	MO
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : zzz.tracon
Operator	common carrier : air carrier
Make Model Name	B737-200
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 240 flight time total : 5500 flight time type : 1400
ASRS Report	529674
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	non adherence : published procedure non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : rejected takeoff
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 3000
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

It was my first captain trip for an air carrier. Everything was going smoothly and on time. We taxied out to runway 9 at mci. The first officer switched to tower. We were then cleared into position and hold. We completed the before takeoff check and I then began to add power. The engines had not yet stabilized but the aircraft began to roll. Tower then advised 'cancel your takeoff.' my first officer then advised canceling takeoff. I began to abort the takeoff. Tower then advised, 'air carrier X, you had not been cleared for takeoff.' we responded 'roger.' tower advised, 'taxi back to the end and call when ready.' we taxied clear and taxied back and was again cleared for a normal takeoff and an uneventful flight.

Original NASA ASRS Text

Title: A B737-200 CREW DEPARTING MCI STARTED TKOF ROLL WITHOUT BEING CLRED FOR TKOF.

Narrative: IT WAS MY FIRST CAPT TRIP FOR AN ACR. EVERYTHING WAS GOING SMOOTHLY AND ON TIME. WE TAXIED OUT TO RWY 9 AT MCI. THE FO SWITCHED TO TWR. WE WERE THEN CLRED INTO POS AND HOLD. WE COMPLETED THE BEFORE TKOF CHK AND I THEN BEGAN TO ADD PWR. THE ENGS HAD NOT YET STABILIZED BUT THE ACFT BEGAN TO ROLL. TWR THEN ADVISED 'CANCEL YOUR TKOF.' MY FO THEN ADVISED CANCELING TKOF. I BEGAN TO ABORT THE TKOF. TWR THEN ADVISED, 'ACR X, YOU HAD NOT BEEN CLRED FOR TKOF.' WE RESPONDED 'ROGER.' TWR ADVISED, 'TAXI BACK TO THE END AND CALL WHEN READY.' WE TAXIED CLR AND TAXIED BACK AND WAS AGAIN CLRED FOR A NORMAL TKOF AND AN UNEVENTFUL FLT.

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.