Narrative:

We were told to cross momar at FL240. First officer was flying and I saw him reach down and put it in the box. I monitored his progress on the legs page and we were talking back and forth about various and sundry non flying related issues. I noticed that we were still at FL270 descending but momar was fast approaching. The profile on the primary flight display was indicating we were on profile. However; there was only about 8 mi to go before momar and he was only descending at around 1000 FPM. I said; 'I don't think you're going to make momar at FL240.' he was slow to respond as it appears he was watching the profile display which indicated he was still in good shape. I then informed ZLA that we weren't going to make momar at FL240. She said; 'roger company number; cleared direct baret. It was then that we realized that he had put FL240 in the FMC at saltn; as depicted on the chart. I think there was some additional confusion with controller after the event as we stayed at FL240 and she said to us; 'company number; descend now to one two thousand;' indicating that we had missed another altitude. Neither of us heard her tell us to descend to one two thousand; but our credibility at that point appeared shot. Better diligence on my part. I'd like to say that it was the late flight; fatigue and all the other excuses you read; but in short; I wasn't doing my job. I should have verified the altitude in the box and had I not been bs'ing; then I more than likely would have been monitoring our progress more closely.

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Original NASA ASRS Text

Title: FLT CREW OF B737-700 ALLOW FATIGUE; SOCIALIZING AND COMPLACENCY REGARDING FMS PROGRAMMING TO RESULT IN A FAILURE TO MAKE A XING RESTR ON THE BARET ARR TO SAN.

Narrative: WE WERE TOLD TO CROSS MOMAR AT FL240. FO WAS FLYING AND I SAW HIM REACH DOWN AND PUT IT IN THE BOX. I MONITORED HIS PROGRESS ON THE LEGS PAGE AND WE WERE TALKING BACK AND FORTH ABOUT VARIOUS AND SUNDRY NON FLYING RELATED ISSUES. I NOTICED THAT WE WERE STILL AT FL270 DSNDING BUT MOMAR WAS FAST APCHING. THE PROFILE ON THE PRIMARY FLT DISPLAY WAS INDICATING WE WERE ON PROFILE. HOWEVER; THERE WAS ONLY ABOUT 8 MI TO GO BEFORE MOMAR AND HE WAS ONLY DSNDING AT AROUND 1000 FPM. I SAID; 'I DON'T THINK YOU'RE GOING TO MAKE MOMAR AT FL240.' HE WAS SLOW TO RESPOND AS IT APPEARS HE WAS WATCHING THE PROFILE DISPLAY WHICH INDICATED HE WAS STILL IN GOOD SHAPE. I THEN INFORMED ZLA THAT WE WEREN'T GOING TO MAKE MOMAR AT FL240. SHE SAID; 'ROGER COMPANY NUMBER; CLRED DIRECT BARET. IT WAS THEN THAT WE REALIZED THAT HE HAD PUT FL240 IN THE FMC AT SALTN; AS DEPICTED ON THE CHART. I THINK THERE WAS SOME ADDITIONAL CONFUSION WITH CTLR AFTER THE EVENT AS WE STAYED AT FL240 AND SHE SAID TO US; 'COMPANY NUMBER; DSND NOW TO ONE TWO THOUSAND;' INDICATING THAT WE HAD MISSED ANOTHER ALT. NEITHER OF US HEARD HER TELL US TO DSND TO ONE TWO THOUSAND; BUT OUR CREDIBILITY AT THAT POINT APPEARED SHOT. BETTER DILIGENCE ON MY PART. I'D LIKE TO SAY THAT IT WAS THE LATE FLT; FATIGUE AND ALL THE OTHER EXCUSES YOU READ; BUT IN SHORT; I WASN'T DOING MY JOB. I SHOULD HAVE VERIFIED THE ALT IN THE BOX AND HAD I NOT BEEN BS'ING; THEN I MORE THAN LIKELY WOULD HAVE BEEN MONITORING OUR PROGRESS MORE CLOSELY.

Data retrieved from NASA's ASRS site as of January 2009 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.