Narrative:

Captain and first officer were assigned 11000 ft altitude at plesant intersection on arrival to phx. Upon reaching 11000 ft, ZAB asked our altitude, and began to alter our heading several times. Radio xmissions with ZAB became erratic. We were then cleared to continue arrival. The tone of voice at ZAB started us to question our assigned altitude. No response from ZAB.

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Original NASA ASRS Text

Title: CONFUSION OVER CLRNC INTERP WAS INCREASED BY A RADIO COM PROB.

Narrative: CAPT AND FO WERE ASSIGNED 11000 FT ALT AT PLESANT INTXN ON ARR TO PHX. UPON REACHING 11000 FT, ZAB ASKED OUR ALT, AND BEGAN TO ALTER OUR HDG SEVERAL TIMES. RADIO XMISSIONS WITH ZAB BECAME ERRATIC. WE WERE THEN CLRED TO CONTINUE ARR. THE TONE OF VOICE AT ZAB STARTED US TO QUESTION OUR ASSIGNED ALT. NO RESPONSE FROM ZAB.

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.