Narrative:

We were given a clearance to descend from FL370 to FL280 and cross hayed intersection at FL180. I had the FMC programmed to cross hayed at FL180 and I started the descent. I reset FL180 in the cruise page, which was my mistake because this deletes any restrs. Also, as I was descending, I was thinking my altitude was FL280 and not FL180 -- my mistake again. By the time I realized the mistake, it was too late for the crossing restr. Consequently, we were high on our hayed crossing of FL180. ATC asked if we were given a crossing restr. WX was VFR.

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Original NASA ASRS Text

Title: A B737-300 DSNDING IN ZNY AIRSPACE, RECEIVES CLRNC TO CROSS HAYED AT FL180. THE FO DOESN'T PROGRAM THE FMS PROPERLY AND CANCELS THE DSCNT. ACFT CROSSED HAYED AT FL250.

Narrative: WE WERE GIVEN A CLRNC TO DSND FROM FL370 TO FL280 AND CROSS HAYED INTXN AT FL180. I HAD THE FMC PROGRAMMED TO CROSS HAYED AT FL180 AND I STARTED THE DSCNT. I RESET FL180 IN THE CRUISE PAGE, WHICH WAS MY MISTAKE BECAUSE THIS DELETES ANY RESTRS. ALSO, AS I WAS DSNDING, I WAS THINKING MY ALT WAS FL280 AND NOT FL180 -- MY MISTAKE AGAIN. BY THE TIME I REALIZED THE MISTAKE, IT WAS TOO LATE FOR THE XING RESTR. CONSEQUENTLY, WE WERE HIGH ON OUR HAYED XING OF FL180. ATC ASKED IF WE WERE GIVEN A XING RESTR. WX WAS VFR.

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.