An air carrier medium large transport did not stop when its takeoff clearance was canceled.

Attributes
ACN	273927
Time
Date	199406
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dca
State Reference	DC
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : takeoff
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
ASRS Report	273927
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	other controllera other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Tower cleared us into position on runway 18 and advised 'be ready for immediate as soon as air carrier traffic clears.' the captain had the engines spooled at 40 percent. The tower then said 'cleared for takeoff, traffic on 2 mi final, or clear the runway.' I responded 'cleared for takeoff, we're on the roll.' after power was set and automatic throttle showed 'thr hold' tower said 'cancel takeoff clearance and turn on runway 15.' after a moment, the captain said 'negative.' at that point we were at or about 100 KTS. I continued my duties monitoring engine instruments and airspeed. During the takeoff roll, the tower made several attempts to communicate with us. We did not respond until airborne and out of 500 ft.

Original NASA ASRS Text

Title: AN ACR MLG DID NOT STOP WHEN ITS TKOF CLRNC WAS CANCELED.

Narrative: TWR CLRED US INTO POS ON RWY 18 AND ADVISED 'BE READY FOR IMMEDIATE AS SOON AS ACR TFC CLRS.' THE CAPT HAD THE ENGS SPOOLED AT 40 PERCENT. THE TWR THEN SAID 'CLRED FOR TKOF, TFC ON 2 MI FINAL, OR CLR THE RWY.' I RESPONDED 'CLRED FOR TKOF, WE'RE ON THE ROLL.' AFTER PWR WAS SET AND AUTO THROTTLE SHOWED 'THR HOLD' TWR SAID 'CANCEL TKOF CLRNC AND TURN ON RWY 15.' AFTER A MOMENT, THE CAPT SAID 'NEGATIVE.' AT THAT POINT WE WERE AT OR ABOUT 100 KTS. I CONTINUED MY DUTIES MONITORING ENG INSTS AND AIRSPD. DURING THE TKOF ROLL, THE TWR MADE SEVERAL ATTEMPTS TO COMMUNICATE WITH US. WE DID NOT RESPOND UNTIL AIRBORNE AND OUT OF 500 FT.

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.