A CRJ200 CREW DEPARTED WITH A TAILWIND IN EXCESS OF 10 KTS.

Narrative

OUR FLT ATTENDANT WAS 40 MINS LATE. CONSEQUENTLY; WE PUSHED BACK 30 MINS BEHIND SCHEDULE. ATIS WAS RPTING WINDS AT 080 DEGS 11 KTS AND RWY 27 WAS THE DEP RWY. OUR WIND CHART SHOWS THIS IS CLOSE TO LIMITATION AND THE WIND HAD BEEN VARYING 070-080 DEGS 10-12 KTS. WE WERE LIGHT AT TKOF WT (45600 LBS) AND USING FULL THRUST. THE LAST WIND CHK FROM ATC WAS 080 DEGS AT 12 KTS; CLRED TO TAKE OFF. I WAS COMFORTABLE; THE WIND SOCK APPEARED TO BE FALLING SOFTLY AND WE DEPARTED. ON CONSULTING THE WIND CHART ENRTE; IT APPEARS WE MAY HAVE EXCEEDED THE TAILWIND LIMITATION. SUPPLEMENTAL INFO FROM ACN 654213: THE CAPT MENTIONED THE WINDSOCK WAS BARELY BLOWING AND THEN TOLD TWR THAT YES; WE WERE OK TO TAKE OFF. THE TWR CLRED US FOR TKOF. THE CAPT RESPONDED 'CLRED FOR TKOF' AND SAID 'YOUR CTLS.' I REPEATED; 'MY CTLS' AND PUSHED THE PWR LEVERS FORWARD AND TOOK OFF. I HAVE TO SAY THAT I REGRET THAT I DIDN'T DECLINE THE TKOF UNTIL I COULD LOOK AT THE CHART TO MAKE SURE WE WEREN'T EXCEEDING A LIMITATION. AT THE TIME; I FELT RUSHED. I FELT LIKE WE NEEDED TO DEPART SOONER RATHER THAN LATER AND I FELT LIKE THE DECISION HAD BEEN MADE THAT WE WERE GOING TO DEPART. I RECOGNIZE THAT I HAD AS MUCH CTL AT THAT MOMENT TO STOP THAT TKOF AS THE CAPT; AND I SHOULD HAVE STOPPED IT. I CAN SAY WITH COMPLETE CERTAINTY THAT I WILL NOT LET THIS HAPPEN AGAIN. I WILL NOT HESITATE TO SLOW THINGS DOWN IN THE INTEREST OF SAFETY AND I WILL MAKE THE OTHER PLT AWARE OF ANY CONCERNS I HAVE; AND IF I NEED TO STOP A FLT FROM TAKING OFF; I WILL USE MY BRAKES IF I HAVE TO UNTIL I AM CONVINCED WE ARE OPERATING SAFELY AND WITHIN ALL OF THE FLT STANDARDS.