Unauthorized uncoord takeoff.

Attributes
ACN	203493
Time
Date	199203
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : ord
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : takeoff ground : holding
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 10000
ASRS Report	203493
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 215 flight time total : 26000
ASRS Report	203522
Events
Anomaly	incursion : runway non adherence : clearance non adherence : far
Independent Detector	other controllera other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We had been cleared into position to hold on runway 6R while a widebody transport cleared the runway. As the widebody transport cleared the runway, we were issued an altitude restriction for departure and cleared for takeoff. I read back the restriction and said 'here we go' to the tower controller. At about 80 KTS, the tower controller said we were cleared for takeoff. I responded he had already cleared us for takeoff. He then replied that had only issued an altitude restriction for our departure and not a takeoff clearance. Both pilot's felt certain the takeoff clearance had been issued at the time the departure restriction was issued.

Original NASA ASRS Text

Title: UNAUTHORIZED UNCOORD TKOF.

Narrative: WE HAD BEEN CLRED INTO POS TO HOLD ON RWY 6R WHILE A WDB CLRED THE RWY. AS THE WDB CLRED THE RWY, WE WERE ISSUED AN ALT RESTRICTION FOR DEP AND CLRED FOR TKOF. I READ BACK THE RESTRICTION AND SAID 'HERE WE GO' TO THE TWR CTLR. AT ABOUT 80 KTS, THE TWR CTLR SAID WE WERE CLRED FOR TKOF. I RESPONDED HE HAD ALREADY CLRED US FOR TKOF. HE THEN REPLIED THAT HAD ONLY ISSUED AN ALT RESTRICTION FOR OUR DEP AND NOT A TKOF CLRNC. BOTH PLT'S FELT CERTAIN THE TKOF CLRNC HAD BEEN ISSUED AT THE TIME THE DEP RESTRICTION WAS ISSUED.

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.