Narrative:

Cleared to descend via the dylin 1 arrival, I failed to meet the crossing restr at dylin intersection of 8000 ft. The problem arose because I did not have a clearly briefed, consistent plan to execute the descent. Specifically, I began the arrival in VNAV, then switched to a vertical speed descent without annunciating the change to the captain. Also, I failed to set the 8000 ft crossing restr in the altitude window of the MCP until it was too late to make the restr. Descending from somto intersection at 11000 ft MSL, I attempted to slow to 250 KIAS passing through 10000 ft MSL, although that speed was not attained until 9600 ft MSL, approximately the altitude at which we crossed dylin intersection. The captain discovered the missed crossing restr, and told ATC we had missed it. ATC said to expedite to 6000 ft, with no reported traffic conflict. Stress and resulting degradation in human performance contributed to late capture of localizer for runway 22L at ewr, with aircraft flying through localizer, then correcting back to the west to capture it. To prevent this kind of mistake, the PF must thoroughly brief his plan of FMC/FMS mode control, and be prepared for all restrs (in VNAV, set lowest altitude restr, as appropriate, on the arrival). Then the pilot must fly his plan.

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Original NASA ASRS Text

Title: B737-300 CREW DID NOT COMPLY WITH A STAR XING RESTR AND HAD A SPD AND TRACK DEV ARRIVING AT EWR.

Narrative: CLRED TO DSND VIA THE DYLIN 1 ARR, I FAILED TO MEET THE XING RESTR AT DYLIN INTXN OF 8000 FT. THE PROB AROSE BECAUSE I DID NOT HAVE A CLRLY BRIEFED, CONSISTENT PLAN TO EXECUTE THE DSCNT. SPECIFICALLY, I BEGAN THE ARR IN VNAV, THEN SWITCHED TO A VERT SPD DSCNT WITHOUT ANNUNCIATING THE CHANGE TO THE CAPT. ALSO, I FAILED TO SET THE 8000 FT XING RESTR IN THE ALT WINDOW OF THE MCP UNTIL IT WAS TOO LATE TO MAKE THE RESTR. DSNDING FROM SOMTO INTXN AT 11000 FT MSL, I ATTEMPTED TO SLOW TO 250 KIAS PASSING THROUGH 10000 FT MSL, ALTHOUGH THAT SPD WAS NOT ATTAINED UNTIL 9600 FT MSL, APPROX THE ALT AT WHICH WE CROSSED DYLIN INTXN. THE CAPT DISCOVERED THE MISSED XING RESTR, AND TOLD ATC WE HAD MISSED IT. ATC SAID TO EXPEDITE TO 6000 FT, WITH NO RPTED TFC CONFLICT. STRESS AND RESULTING DEGRADATION IN HUMAN PERFORMANCE CONTRIBUTED TO LATE CAPTURE OF LOC FOR RWY 22L AT EWR, WITH ACFT FLYING THROUGH LOC, THEN CORRECTING BACK TO THE W TO CAPTURE IT. TO PREVENT THIS KIND OF MISTAKE, THE PF MUST THOROUGHLY BRIEF HIS PLAN OF FMC/FMS MODE CTL, AND BE PREPARED FOR ALL RESTRS (IN VNAV, SET LOWEST ALT RESTR, AS APPROPRIATE, ON THE ARR). THEN THE PLT MUST FLY HIS PLAN.

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.