Narrative:

After engine start, we received message 'braking steering control unit #1 fault.' captain was in a hurry and stated 'if it doesn't clear, we'll take care of it in ZZZ.' there was a long line for departure and since we were already late, I suggested we give maintenance a call. I was talking with maintenance control on #2 communication while captain used #1 communication for ground control. I tried cycling 2 breakers and antiskid/nosewheel steering switch per maintenance control with no remedy. The fault remained on ECAM. While maintenance control was trying to issue a temporary MEL we use, we were cleared into position on the runway. The captain answered all ATC radio calls and told me if I didn't get the MEL release we could get it in the air. I then asked maintenance control if we could pick it up airborne and was told 'negative.' I told the captain that we couldn't depart without the issuance of the temporary MEL, but by this time we had pushed the thrust levers forward and said 'we're going, it's ok.' I incorrectly assumed the fault had cleared and we were good to go. I quickly punched off of #2 and joined the captain on communication #1 for takeoff roll. The fault had not cleared and in his rush, the captain decided to depart anyway. The fault remained on ECAM status page for our entire flight to destination. The captain didn't even write up discrepancy at our home base with full maintenance. As we were done flying, I informed incoming crew of fault and mechanic that came on board to clear another temporary MEL. Cause: capts rush to get home without further delay. He did not want to take 5 mins needed to complete documentation prior to takeoff. My position as first officer and not being assertive enough to stop him prior to him applying takeoff thrust. Prevent recurrence: captain to follow company procedures regarding maintenance issues and taxiing onto active runway without both pilots on #1 communication (ATC). Myself first officer: more assertive, somehow communicate to captain that I wasn't ready to depart and prevent him from taking off. Better CRM.

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Original NASA ASRS Text

Title: A319 CAPT TOOK OFF PRIOR TO OBTAINING A TEMPORARY MEL RELEASE FROM MAINT FOR AN ANTISKID AND NOSEWHEEL STEERING MALFUNCTION.

Narrative: AFTER ENG START, WE RECEIVED MESSAGE 'BRAKING STEERING CTL UNIT #1 FAULT.' CAPT WAS IN A HURRY AND STATED 'IF IT DOESN'T CLR, WE'LL TAKE CARE OF IT IN ZZZ.' THERE WAS A LONG LINE FOR DEP AND SINCE WE WERE ALREADY LATE, I SUGGESTED WE GIVE MAINT A CALL. I WAS TALKING WITH MAINT CTL ON #2 COM WHILE CAPT USED #1 COM FOR GND CTL. I TRIED CYCLING 2 BREAKERS AND ANTISKID/NOSEWHEEL STEERING SWITCH PER MAINT CTL WITH NO REMEDY. THE FAULT REMAINED ON ECAM. WHILE MAINT CTL WAS TRYING TO ISSUE A TEMPORARY MEL WE USE, WE WERE CLRED INTO POS ON THE RWY. THE CAPT ANSWERED ALL ATC RADIO CALLS AND TOLD ME IF I DIDN'T GET THE MEL RELEASE WE COULD GET IT IN THE AIR. I THEN ASKED MAINT CTL IF WE COULD PICK IT UP AIRBORNE AND WAS TOLD 'NEGATIVE.' I TOLD THE CAPT THAT WE COULDN'T DEPART WITHOUT THE ISSUANCE OF THE TEMPORARY MEL, BUT BY THIS TIME WE HAD PUSHED THE THRUST LEVERS FORWARD AND SAID 'WE'RE GOING, IT'S OK.' I INCORRECTLY ASSUMED THE FAULT HAD CLRED AND WE WERE GOOD TO GO. I QUICKLY PUNCHED OFF OF #2 AND JOINED THE CAPT ON COM #1 FOR TKOF ROLL. THE FAULT HAD NOT CLRED AND IN HIS RUSH, THE CAPT DECIDED TO DEPART ANYWAY. THE FAULT REMAINED ON ECAM STATUS PAGE FOR OUR ENTIRE FLT TO DEST. THE CAPT DIDN'T EVEN WRITE UP DISCREPANCY AT OUR HOME BASE WITH FULL MAINT. AS WE WERE DONE FLYING, I INFORMED INCOMING CREW OF FAULT AND MECH THAT CAME ON BOARD TO CLR ANOTHER TEMPORARY MEL. CAUSE: CAPTS RUSH TO GET HOME WITHOUT FURTHER DELAY. HE DID NOT WANT TO TAKE 5 MINS NEEDED TO COMPLETE DOCUMENTATION PRIOR TO TKOF. MY POS AS FO AND NOT BEING ASSERTIVE ENOUGH TO STOP HIM PRIOR TO HIM APPLYING TKOF THRUST. PREVENT RECURRENCE: CAPT TO FOLLOW COMPANY PROCS REGARDING MAINT ISSUES AND TAXIING ONTO ACTIVE RWY WITHOUT BOTH PLTS ON #1 COM (ATC). MYSELF FO: MORE ASSERTIVE, SOMEHOW COMMUNICATE TO CAPT THAT I WASN'T READY TO DEPART AND PREVENT HIM FROM TAKING OFF. BETTER CRM.

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.