B737-300 CREW HAD TRACK DEV AND ALT DEV WHILE FLYING THE MITTS STAR.

Narrative

THIS FLT WAS FILED FOR THE CIVET ARR. I HAD PROGRAMMED THE CIVET ARR; AND THE ILS RWY 25L AT LAX INTO THE FMC BEFORE DEPARTING LAS FOR LAX. ENRTE TO CIVET; WE WERE TOLD TO 'EXPECT' THE MITTS ARR INTO LAX. AT 2 DME FROM CIVET ON J60 (211 COURSE INTO CIVET); ATC CONTACTED US AND TOLD US WE WERE 2 MI FROM CIVET; CLRED THE MITTS ARR; RWY 24R AT LAX. I LOOKED DOWN AT THE FMC AND NOTICED THAT THE PNF HAD ALREADY PROGRAMMED MITTS INTO THE FMC; BUT THE FMC WAS SHOWING: CIVET; RTE DISCONTINUITY; MITTS ON THE SCREEN. MISSING WERE 2 NAV POINTS BTWN CIVET AND MITTS (IPSIY AND SNRKL). WHAT I HAD FAILED TO DO WAS VERIFY WHAT THE PNF HAD PROGRAMMED INTO THE FMC AS DIRECTED BY OUR PROCS. WE IMMEDIATELY RECEIVED A CALL FROM APCH; AND WERE GIVEN A HDG TO INTERCEPT THE RWY 24R LOC AT LAX; BECAUSE WE HAD OVERSHOT OUR TURN AT CIVET. I HAD BECOME DISTR BY THE PROGRAMMING OF THE FMC; AND FAILED TO TURN TO THE 253 DEG COURSE OUT OF CIVET TO PROCEED INBOUND TO IPSIY. WE WERE STILL ON THE 211 DEG HDG FROM J60 TO CIVET; ALTHOUGH WE HAD JUST PASSED CIVET. I TUNED UP THE RWY 24R LOC IN MY VHF NAV AND INTERCEPTED THE LOC AS DIRECTED BY ATC. WE CROSSED MITTS AT 10000 FT; AND THEN PUT 8000 FT IN THE ALT WINDOW OF THE MCP FOR THE DENAY XING. IN THE CONFUSION CREATED BY OVERSHOOTING OUR TURN AT CIVET; BOTH PLTS FAILED TO CATCH THE JONZZ XING RESTR AT 9000 FT. I AM NOT SURE AT WHAT ALT WE ACTUALLY CROSSED JONZZ; AND ATC DID NOT QUERY US ON OUR ALT AT JONZZ. WE DID NOT CATCH THE JONZZ XING RESTR UNTIL PAST JONZZ. AFTER ALL OF THIS CONFUSION; WE LANDED UNEVENTFULLY ON RWY 24R AT LAX. SOME IMPORTANT LESSONS I WILL TAKE AWAY FROM THIS EXPERIENCE: 1) ALWAYS ASK THE OTHER PLT TO VERIFY ANY CHANGES MADE IN THE FMC. 2) WHEN TOLD BY ATC TO EXPECT THE MITTS ARR; I WILL ALREADY HAVE THE RWY 24R LOC TUNED IN MY VHF NAV RECEIVER AS A BACK-UP IN CASE WE DO GET CLRED VIA THE MITTS ARR; AND WE HAVE NOT YET REPROGRAMMED THE FMC. 3) ALWAYS FLY THE AIRPLANE FIRST AND WORRY ABOUT REPROGRAMMING THE FMC LATER. 4) DOUBLE CHK ALT XING RESTRS ON ARRS/DEPS.