FLT INSTRUCTOR AND STUDENT WERE UNABLE TO COMPLY WITH CLRNC TO 'LAND AND HOLD SHORT' OF INTERSECTING RWY; RESULTING IN RWY TRANSGRESSION. PLT DEV.

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AT ABOUT XA00 LCL ON DEC/SAT/94; HAVING BEEN TOLD TO LAND ON SANTA BARBARA RWY 7 AND HOLD SHORT OF RWY 15 FOR LNDG TFC; MY STUDENT WAS UNABLE TO LAND THE ACFT AND COME TO A COMPLETE STOP IN TIME TO HOLD SHORT OF RWY 15. WE HAD ACCEPTED THE CLRNC WHILE ON FINAL; DOING A PRACTICE LOC APCH; AND INTENDED TO HOLD SHORT AS INSTRUCTED. HOWEVER; MY STUDENT GOT CONFUSED AFTER TAKING OFF HIS HOOD; DURING THE TRANSITION FROM INST TO VISUAL FLT. HE HELD TOO MUCH SPD ON FINAL APCH; DESPITE MY INSTRUCTIONS TO SLOW DOWN. HIS CONFUSION CAUSED HIM TO IGNORE MY WARNINGS TO SLOW DOWN; AND AS A RESULT WE FLOATED TOO FAR. UNFORTUNATELY; IT ONLY STARTED TO BECOME APPARENT THAT WE WOULD TRULY LAND TOO LONG ONCE IT WAS TOO LATE TO DO SOMETHING. AT THAT TIME; WE COULD HAVE GONE AROUND AND AVOIDED ACTING CONTRARY TO THE CLRNC; BUT THE CTLR HAD ALREADY TOLD THE ACFT LNDG ON THE INTERSECTING RWY TO GAR. IF WE HAD INITIATED A GAR IT WOULD HAVE CREATED ANOTHER DANGEROUS SIT AS WE MAY HAVE 'INTERSECTED' IN THE AIR. IN RETROSPECT; SINCE I WAS NEVER UNDER THE HOOD; AND THEREFORE WAS NOT AS CONFUSED AS MY STUDENT; I SHOULD HAVE HAD HIM INITIATED A GAR AS SOON AS THERE WAS ANY DOUBT THAT WE MIGHT NOT BE ABLE TO STOP SHORT OF THE INTERSECTING RWY. UNFORTUNATELY; I WAS TOO FIXATED ON MY DUTIES AS A FLT INSTRUCTOR TO EITHER: 1) DECISIVELY MAKE UP MY MIND AS TO HOW LONG WE WOULD LAND AT AN EARLY ENOUGH TIME; OR 2) TAKE OVER CTL OF THE ACFT FROM MY CONFUSED STUDENT AND INITIATED A GAR FROM THE R SEAT. THERE ARE A NUMBER OF 'HUMAN FACTORS' WHICH INFLUENCED THE OUTCOME OF THIS EVENT. MY STUDENT WAS CONFUSED ABOUT EVERYTHING THAT DAY. HE WAS UNABLE TO MASTER EITHER THAT DAY'S LESSON; OR MANY OF THE PREVIOUS ONES HE HAD MASTERED ON EARLIER DATES. AS A RESULT; I WAS VERY BUSY EXPLAINING AND CORRECTING HIS INST APCHS. MY EYES WERE IN THE COCKPIT MORE THAN THEY SHOULD HAVE BEEN. ALSO; I WAS FRUSTRATED WITH HIS POOR PERFORMANCE. AS WE GOT CLOSER TO THE RWY I TOLD HIM TO SLOW DOWN A NUMBER OF TIMES. HE DID NOT COMPLY WITH MY SUGGESTION. BY THE TIME I WAS AWARE OF HIS POOR REACTION AND OUR PROX TO THE INTERSECTING RWY; IT WAS TOO LATE AND THE OTHER PLANE WAS GOING AROUND. ADDITIONALLY; OUR HIGH SPD AND LOW ALT AS WE FLOATED IN GND EFFECT MADE IT VERY DIFFICULT TO JUDGE HOW CLOSE THE INTXN WAS. IT WAS TOO LOW AN ANGLE TO ACCURATELY JUDGE HOW CLOSE TO THE INTXN WE WERE. HOWEVER; AS I HAVE WRITTEN; THERE WAS A SMALL WINDOW OF TIME WHEN A GAR COULD HAVE BEEN INITIATED. IT WAS MY DIVERTED ATTN TO A FLOUNDERING STUDENT COMBINED WITH MY STUDENT'S CONFUSION UPON TRANSITIONING FROM INSTS TO VISUAL FLT THAT CAUSED US TO MISS THAT WINDOW.