PART 121 ACR ACFT FAILED TO COMPLY WITH XING RESTR AT LYNSY INTXN ON ARR TO LAS. MINOR PAX MEDICAL PROB DISTR FLT CREW FROM FLT MGMNT PRIORITIES.

Narrative

CLRED TO DSND ON THE LYNSY ARR INTO LAS. I WAS THE CAPT ON AN A320 WHEN THIS INCIDENT OCCURRED. FLT WAS A SCHEDULED PART 121 COMMERCIAL PAX AIRLINER FROM ZZZ TO LAS. EARLIER IN THE FLT A 14 YR OLD BOY COMPLAINED TO ONE OF OUR FLT ATTENDANTS ABOUT AN EAR PROB. SHE CALLED FOR A PARAMEDIC. AFTER THE PARAMEDIC'S EXAMINATION; THE BOY WAS INFORMED THERE WAS NOTHING THAT COULD BE DONE ENRTE. WE (MYSELF; THE FLT ATTENDANT; AND MY FO) CONTACTED COMPANY MEDICAL. THEY SUGGESTED CONTINUING TO LAS AND MAKING THE; CABIN DSND AS SLOWLY AS POSSIBLE. WHEN WE WERE CLRED AT PLTS DISCRETION TO CROSS LYNSY AT 12000 FT AND 250 KTS; WE STARTED OUR DSCNT. THIS ALLOWED US TO HAVE A VERY SHALLOW DSCNT AS WE STARTED DOWN MUCH EARLIER THAN NORMAL. FOR SOME REASON; THE FMGC COMPUTER DROPPED THE 250 KTS/12000 FT RESTR AT LYNSY WHICH WE HAD ENTERED. NEITHER ONE OF US NOTICED. WE WERE SO CAUGHT UP IN MAKING SURE THE CABIN DSCNT RATE DID NOT EXCEED 200 FPM; WE NEGLECTED TO NOTICE WHAT ALT THE FMGC PREDICTED THE ACFT WOULD CROSS LYNSY AT. AFTER I NOTICED THE MAJOR DISCREPANCY IN OUR CLRNC AND THE COMPUTER'S PREDICTION; I TOOK ACTION. I TURNED OFF THE AUTOPLT AND TRIED TO MAKE THE RESTR. IN DOING SO; WE OVERFLEW THE FIX BEFORE MAKING THE REQUIRED TURN. THE USUAL PROC FOR THIS ARR IS FOR THE ACFT TO TURN BEFORE THE FIX SO AS TO INTERCEPT THE OUTBOUND COURSE. BASICALLY; I OVERFLEW LYNSY 30 KTS TOO FAST; 300 FT TOO HIGH; AND INTERCEPTED THE OUTBOUND RADIAL ALMOST 2 MI OFF CTRLINE. AFTER DISCUSSING THIS WITH MY FO; WE REALIZED WE HAD FORGOTTEN THE #1 RULE OF FLYING -- FLY THE AIRPLANE. WE KNEW BETTER. WE ARE BETTER AT FLYING THAN THIS ARR SHOWED. I LEARNED THAT; AS ALWAYS; OTHER CONSIDERATIONS MUST COME SECOND.