Narrative:

While flying the kario arrival into phx, we were cleared to cross the plsnt (pxr 135 degree/35) at 12000 and 250 KTS. On descent it became apparent that due to an extreme tailwind our normal descent profile would not allow us to make the crossing restriction. The speed brakes were extended and a descent rate in excess of 4000 FPM was employed to make the restriction. Although the controller questions our ability to make the crossing, we were able to comply with the restriction. This arrival is very busy with 4 navigation aids to monitor and change and compounded by the typically strong winter tailwinds is very difficult to make. I suggest the arrival be modified to allow a more normal descent profile.

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Original NASA ASRS Text

Title: NO ANOMOLY. FLC MADE THEIR XING ALT. 2 RPTRS PROTEST HAVING TO MAKE HIGH RATE OF DSCNT.

Narrative: WHILE FLYING THE KARIO ARR INTO PHX, WE WERE CLRED TO CROSS THE PLSNT (PXR 135 DEG/35) AT 12000 AND 250 KTS. ON DSCNT IT BECAME APPARENT THAT DUE TO AN EXTREME TAILWIND OUR NORMAL DSCNT PROFILE WOULD NOT ALLOW US TO MAKE THE XING RESTRICTION. THE SPD BRAKES WERE EXTENDED AND A DSCNT RATE IN EXCESS OF 4000 FPM WAS EMPLOYED TO MAKE THE RESTRICTION. ALTHOUGH THE CTLR QUESTIONS OUR ABILITY TO MAKE THE XING, WE WERE ABLE TO COMPLY WITH THE RESTRICTION. THIS ARR IS VERY BUSY WITH 4 NAV AIDS TO MONITOR AND CHANGE AND COMPOUNDED BY THE TYPICALLY STRONG WINTER TAILWINDS IS VERY DIFFICULT TO MAKE. I SUGGEST THE ARR BE MODIFIED TO ALLOW A MORE NORMAL DSCNT PROFILE.

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.