Narrative:

ZFW asked us to cross 50 mi northwest of bridgeport at FL240 and to begin the descent now. The descent commenced and a fix was typed into the CDU adding the altitude crossing restr at 50 NM. We then concentrated our attention on an aircraft write-up. A few mi short of the crossing restr, center asked if we were able to meet FL240 as requested. We discovered a typing error in the CDU which did not correspond to 50 NM. We acknowledged we could not meet the altitude restr by 50 NM and requested a vector off course if necessary. Center told us to expedite the descent as much as possible.

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Original NASA ASRS Text

Title: ALTDEV. XING RESTR NOT MET. FMS MISPROGRAMMED.

Narrative: ZFW ASKED US TO CROSS 50 MI NW OF BRIDGEPORT AT FL240 AND TO BEGIN THE DSCNT NOW. THE DSCNT COMMENCED AND A FIX WAS TYPED INTO THE CDU ADDING THE ALT XING RESTR AT 50 NM. WE THEN CONCENTRATED OUR ATTN ON AN ACFT WRITE-UP. A FEW MI SHORT OF THE XING RESTR, CTR ASKED IF WE WERE ABLE TO MEET FL240 AS REQUESTED. WE DISCOVERED A TYPING ERROR IN THE CDU WHICH DID NOT CORRESPOND TO 50 NM. WE ACKNOWLEDGED WE COULD NOT MEET THE ALT RESTR BY 50 NM AND REQUESTED A VECTOR OFF COURSE IF NECESSARY. CTR TOLD US TO EXPEDITE THE DSCNT AS MUCH AS POSSIBLE.

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.