Narrative:

Location: karla fix on bonham 4 arrival into dfw. Captain's leg. Approaching byp, ZFW gave us clearance to cross karla at or above 15000 ft and cross lemyn at 11000 ft. First officer read back clearance and set 11000 ft in altitude select window. Captain concurred with 11000 ft selection and the 15000 ft karla restr. During all the various descent activities, checklists, PA, etc, both captain and first officer forgot about the karla restr. Passing 13000 ft, approaching karla, captain remembered the restr. We were now on approach control and told them about our restr and our altitude. Approach control said it was ok and there were no traffic conflicts. It is possible that we received a FL180 descent clearance after the karla and lemyn assignments, and were subsequently cleared to 11000 ft at lemyn without the karla restr, but with all the activity I don't recall for sure if that was the leg on which we received the FL180 clearance after receiving the original STAR crossing altitudes. Supplemental information from acn 535786: I was surprised when the captain noted that we were supposed to be at or above 15000 ft at karla, we were passing through 13000 ft at the time. I immediately advised approach control of our altitude and asked if they wanted us to climb or remain at 12800 ft. They said it wasn't a problem, or something to effect, and to continue to 11000 ft.

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Original NASA ASRS Text

Title: AN MD80 CREW, DSNDING INTO DFW, OVERSHOT ASSIGNED ALT, MISSING AN 'AT OR ABOVE' XING RESTR.

Narrative: LOCATION: KARLA FIX ON BONHAM 4 ARR INTO DFW. CAPT'S LEG. APCHING BYP, ZFW GAVE US CLRNC TO CROSS KARLA AT OR ABOVE 15000 FT AND CROSS LEMYN AT 11000 FT. FO READ BACK CLRNC AND SET 11000 FT IN ALT SELECT WINDOW. CAPT CONCURRED WITH 11000 FT SELECTION AND THE 15000 FT KARLA RESTR. DURING ALL THE VARIOUS DSCNT ACTIVITIES, CHKLISTS, PA, ETC, BOTH CAPT AND FO FORGOT ABOUT THE KARLA RESTR. PASSING 13000 FT, APCHING KARLA, CAPT REMEMBERED THE RESTR. WE WERE NOW ON APCH CTL AND TOLD THEM ABOUT OUR RESTR AND OUR ALT. APCH CTL SAID IT WAS OK AND THERE WERE NO TFC CONFLICTS. IT IS POSSIBLE THAT WE RECEIVED A FL180 DSCNT CLRNC AFTER THE KARLA AND LEMYN ASSIGNMENTS, AND WERE SUBSEQUENTLY CLRED TO 11000 FT AT LEMYN WITHOUT THE KARLA RESTR, BUT WITH ALL THE ACTIVITY I DON'T RECALL FOR SURE IF THAT WAS THE LEG ON WHICH WE RECEIVED THE FL180 CLRNC AFTER RECEIVING THE ORIGINAL STAR XING ALTS. SUPPLEMENTAL INFO FROM ACN 535786: I WAS SURPRISED WHEN THE CAPT NOTED THAT WE WERE SUPPOSED TO BE AT OR ABOVE 15000 FT AT KARLA, WE WERE PASSING THROUGH 13000 FT AT THE TIME. I IMMEDIATELY ADVISED APCH CTL OF OUR ALT AND ASKED IF THEY WANTED US TO CLB OR REMAIN AT 12800 FT. THEY SAID IT WASN'T A PROB, OR SOMETHING TO EFFECT, AND TO CONTINUE TO 11000 FT.

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.