Narrative:

Filed and cleared the skees two arrival into slc. After bearr fix at 16000 ft ATC cleared us to descend 'via' the skees arrival. Approaching the skees fix we were given runway 17 as the landing runway. Runway 16L was the expected runway and loaded in the FMS. We selected runway 17 in our FMS. When executed our skees arrival dropped out. We no longer had route or altitude guidance. We reselected the arrival for a runway 17 landing. Reacquired our arrival path and realized we had 6 NM to descend from 16000 ft to 13000 ft at the booot fix. We passed booot at 13500 ft. This arrival into slc is runway dependent. Changing runways after commencing the arrival requires total reprogramming of the procedure not just a runway change. ATC controllers are not aware of this. On the arrival procedure the skees arrival appears to be multi runway capable. This is in fact not the case in the aircraft FMS computer. Reprogramming a runway change on this and other arrs into slc are not simple; but time consuming. And during reprogramming we lose route and altitude guidance for the arrival.

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Original NASA ASRS Text

Title: MD80 SERIES ON ARRIVAL INTO SLC WAS GIVEN RWY CHANGE WHILE DESCENDING 'VIA' THE ARRIVAL. REPROGRAMMING THE FMS RESULTED IN LOSS OF BOTH VERTICAL AND LATERAL GUIDANCE UNTIL THE ARRIVAL WAS REINSERTED.

Narrative: FILED AND CLRED THE SKEES TWO ARR INTO SLC. AFTER BEARR FIX AT 16000 FT ATC CLRED US TO DSND 'VIA' THE SKEES ARR. APCHING THE SKEES FIX WE WERE GIVEN RWY 17 AS THE LNDG RWY. RWY 16L WAS THE EXPECTED RWY AND LOADED IN THE FMS. WE SELECTED RWY 17 IN OUR FMS. WHEN EXECUTED OUR SKEES ARR DROPPED OUT. WE NO LONGER HAD RTE OR ALT GUIDANCE. WE RESELECTED THE ARR FOR A RWY 17 LNDG. REACQUIRED OUR ARR PATH AND REALIZED WE HAD 6 NM TO DSND FROM 16000 FT TO 13000 FT AT THE BOOOT FIX. WE PASSED BOOOT AT 13500 FT. THIS ARR INTO SLC IS RWY DEPENDENT. CHANGING RWYS AFTER COMMENCING THE ARR REQUIRES TOTAL REPROGRAMMING OF THE PROC NOT JUST A RWY CHANGE. ATC CTLRS ARE NOT AWARE OF THIS. ON THE ARR PROC THE SKEES ARR APPEARS TO BE MULTI RWY CAPABLE. THIS IS IN FACT NOT THE CASE IN THE ACFT FMS COMPUTER. REPROGRAMMING A RWY CHANGE ON THIS AND OTHER ARRS INTO SLC ARE NOT SIMPLE; BUT TIME CONSUMING. AND DURING REPROGRAMMING WE LOSE RTE AND ALT GUIDANCE FOR THE ARR.

Data retrieved from NASA's ASRS site as of May 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.