B777 CREW CONTINUED TKOF; DESPITE A TKOF WARNING HORN.

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WHILE GIVING AN ENRTE CHK; I OBSERVED CREW ADVANCE PWR FOR TKOF AND ENCOUNTERING TKOF WARNING HORN WITH CONFIGN GEAR STEERING WARNING ANNUNCIATION. THE CAPT RETARDED THROTTLES; IDENTED AS CONFIGN GEAR; THEN ADVANCED PWR AND CONTINUED TKOF. MADE STATEMENT 'WARNING WILL GO OFF AND OUT ON ROLL AS ACFT STRAIGHTENS OUT.' WARNING CONTINUED. BY THE TIME CREW RECOGNIZED WARNING WOULD NOT CEASE; ACFT WAS WELL ABOVE 80 KTS AND ACCELERATING RAPIDLY. CAPT ELECTED TO CONTINUE TKOF; REALIZING IT MIGHT HAVE BEEN A REAL GEAR AND STEERING PROB. CREW DISCUSSED EVENT AFTER AIRBORNE; AND CAPT STATED DURING SIMULATOR TRAINING AND ON IOE THAT SAME WARNING OCCURRED AND INSTRUCTOR AND IOE CAPTAIN INSTRUCTED TO CONTINUE AND WARNING WOULD SILENCE ON TKOF ROLL -- THAT IS; UNLESS THERE IS AN ACTUAL MALFUNCTION. ON DEBRIEFING OF FLT; CREW KNEW AND SHOULD HAVE STOPPED ACFT AND IN RETROSPECT WOULD HAVE. I BELIEVE AN IMPROPER LACK OF EMPHASIS ON THE PROB IS OCCURRING AT THE CARRIER'S TRAINING CENTER AND DURING LINE TRAINING.