An large transport crew refused to reject their takeoff when asked by tower to do so.

Attributes
ACN	496260
Time
Date	200012
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sfo.airport
State Reference	CA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sfo.tower
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : sfo.tower
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 135
Flight Phase	landing : go around
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 60 flight time total : 10000 flight time type : 60
ASRS Report	496260
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	conflict : ground less severe non adherence : published procedure other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance Aircraft
Primary Problem	ATC Human Performance

Narrative:

Approximately 30 seconds after takeoff clearance received (aircraft accelerating), tower canceled takeoff clearance. I advised 'unable' and tower responded by sending commuter aircraft around (I was departing runway 1R, he was landing runway 28L or runway 28R). I never saw conflict aircraft. Tower handed me off to departure with 'thanks for your help' and controller adjusted to my command by sending commuter around -- all handled safely. Rejecting takeoff for me a very big deal as autobrakes arm above 90 KTS -- violent braking. Also passenger anxiety and possible panic, brake cooling and QRH checklist to perform.

Original NASA ASRS Text

Title: AN LGT CREW REFUSED TO REJECT THEIR TKOF WHEN ASKED BY TWR TO DO SO.

Narrative: APPROX 30 SECONDS AFTER TKOF CLRNC RECEIVED (ACFT ACCELERATING), TWR CANCELED TKOF CLRNC. I ADVISED 'UNABLE' AND TWR RESPONDED BY SENDING COMMUTER ACFT AROUND (I WAS DEPARTING RWY 1R, HE WAS LNDG RWY 28L OR RWY 28R). I NEVER SAW CONFLICT ACFT. TWR HANDED ME OFF TO DEP WITH 'THANKS FOR YOUR HELP' AND CTLR ADJUSTED TO MY COMMAND BY SENDING COMMUTER AROUND -- ALL HANDLED SAFELY. REJECTING TKOF FOR ME A VERY BIG DEAL AS AUTOBRAKES ARM ABOVE 90 KTS -- VIOLENT BRAKING. ALSO PAX ANXIETY AND POSSIBLE PANIC, BRAKE COOLING AND QRH CHKLIST TO PERFORM.

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.