Narrative:

Arriving in the lax terminal area for a landing at lax I as a new copilot was flying the aircraft and was proceeding along the civet 1 arrival. I was using the autoplt with VNAV selected and all the appropriate crossing altitudes entered in the FMC. We were anticipating the ILS to runway 25L and the captain had tuned and idented it on the center ILS receiver but we delayed selecting it in the FMC to avoid losing our FMC VNAV altitudes on the civet 1 arrival. At or near the bonez intersection we were cleared for the ILS runway 25L approach. We selected it in the FMC and found ourselves on the localizer and GS so the captain selected the approach mode on the autoplt for me and the aircraft captured the localizer and GS. The aircraft then proceeded inbound on the approach following the GS down to a normal landing. The problem that may have occurred was in the intermediate crossing altitudes on the approach. The crossing fixes did not appear on the FMC's approach and once cleared for the approach on the GS I had discarded the intermediate fixes form my train of thought focusing on the localizer/GS aspect of the approach. Whether it was my lack of experience in the aircraft and its FMC or my unfamiliarity with this approach into lax it seems as though I was lulled into a wrong sense of situational awareness and may have inadvertently crossed below an altitude restr on the approach.

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Original NASA ASRS Text

Title: FLC OF A B767 FAILED TO MEET THE INTERMEDIATE XING ALTS DURING A STAR ARR ROUTING AFTER BEING CLRED FOR AN ILS APCH. THE GS WAS FOLLOWED BY THE FMC AUTOPLT APCH COUPLER PRIOR TO THE FINAL APCH FIX WHICH DID NOT HAVE THE INTERMEDIATE FIXES PROGRAMMED. THEREFORE, THE ACFT FOLLOWED ONLY THE GS PRIOR TO THE OM FIX RESULTING IN MISSING IMMEDIATE FIXES.

Narrative: ARRIVING IN THE LAX TERMINAL AREA FOR A LNDG AT LAX I AS A NEW COPLT WAS FLYING THE ACFT AND WAS PROCEEDING ALONG THE CIVET 1 ARR. I WAS USING THE AUTOPLT WITH VNAV SELECTED AND ALL THE APPROPRIATE XING ALTS ENTERED IN THE FMC. WE WERE ANTICIPATING THE ILS TO RWY 25L AND THE CAPT HAD TUNED AND IDENTED IT ON THE CTR ILS RECEIVER BUT WE DELAYED SELECTING IT IN THE FMC TO AVOID LOSING OUR FMC VNAV ALTS ON THE CIVET 1 ARR. AT OR NEAR THE BONEZ INTXN WE WERE CLRED FOR THE ILS RWY 25L APCH. WE SELECTED IT IN THE FMC AND FOUND OURSELVES ON THE LOC AND GS SO THE CAPT SELECTED THE APCH MODE ON THE AUTOPLT FOR ME AND THE ACFT CAPTURED THE LOC AND GS. THE ACFT THEN PROCEEDED INBOUND ON THE APCH FOLLOWING THE GS DOWN TO A NORMAL LNDG. THE PROB THAT MAY HAVE OCCURRED WAS IN THE INTERMEDIATE XING ALTS ON THE APCH. THE XING FIXES DID NOT APPEAR ON THE FMC'S APCH AND ONCE CLRED FOR THE APCH ON THE GS I HAD DISCARDED THE INTERMEDIATE FIXES FORM MY TRAIN OF THOUGHT FOCUSING ON THE LOC/GS ASPECT OF THE APCH. WHETHER IT WAS MY LACK OF EXPERIENCE IN THE ACFT AND ITS FMC OR MY UNFAMILIARITY WITH THIS APCH INTO LAX IT SEEMS AS THOUGH I WAS LULLED INTO A WRONG SENSE OF SITUATIONAL AWARENESS AND MAY HAVE INADVERTENTLY CROSSED BELOW AN ALT RESTR ON THE APCH.

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.