Narrative:

Doing a runway change; 2 sectors were working off of 2 different configns. The OM told one to change and not the other. 2 IFR aircraft; both controllers thought they were in their airspace. Fnl controller vectored for new runway; cyn controller vectored for old runway. Each sector thought they owned the airspace and did not see limited data block till too late. Supplemental information from acn 707191: took over canyon sector from another controller who told me we were contemplating a runway change; but not yet. Sat down and worked sector per confign one. Unfortunately; about 2 mins after I sat down; we changed to confign 6; and no one told me. I was now in final's airspace with several aircraft. Aircraft X was about 10 mi south of las; northbound; 6000 ft descending to 5000 ft; with routing for runway 19. I noticed a limited data block about 5 mi northeast of our position; wbound at 7000 ft. The limited started to descend. I gave a traffic alert to aircraft X and expedited him down to 5000 ft. He reported level at 5000 ft with the rj in sight overhead. The operations manager did not advise all controllers in a timely manner that we had changed configns.

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Original NASA ASRS Text

Title: L30 CTLR DESCRIBED LOSS OF SEPARATION WHEN 2 SECTORS WERE VECTORING FOR DIFFERENT RWYS DUE TO INTRAFAC COORD FAILURE.

Narrative: DOING A RWY CHANGE; 2 SECTORS WERE WORKING OFF OF 2 DIFFERENT CONFIGNS. THE OM TOLD ONE TO CHANGE AND NOT THE OTHER. 2 IFR ACFT; BOTH CTLRS THOUGHT THEY WERE IN THEIR AIRSPACE. FNL CTLR VECTORED FOR NEW RWY; CYN CTLR VECTORED FOR OLD RWY. EACH SECTOR THOUGHT THEY OWNED THE AIRSPACE AND DID NOT SEE LIMITED DATA BLOCK TILL TOO LATE. SUPPLEMENTAL INFO FROM ACN 707191: TOOK OVER CANYON SECTOR FROM ANOTHER CTLR WHO TOLD ME WE WERE CONTEMPLATING A RWY CHANGE; BUT NOT YET. SAT DOWN AND WORKED SECTOR PER CONFIGN ONE. UNFORTUNATELY; ABOUT 2 MINS AFTER I SAT DOWN; WE CHANGED TO CONFIGN 6; AND NO ONE TOLD ME. I WAS NOW IN FINAL'S AIRSPACE WITH SEVERAL ACFT. ACFT X WAS ABOUT 10 MI S OF LAS; NBOUND; 6000 FT DSNDING TO 5000 FT; WITH ROUTING FOR RWY 19. I NOTICED A LIMITED DATA BLOCK ABOUT 5 MI NE OF OUR POS; WBOUND AT 7000 FT. THE LIMITED STARTED TO DSND. I GAVE A TFC ALERT TO ACFT X AND EXPEDITED HIM DOWN TO 5000 FT. HE RPTED LEVEL AT 5000 FT WITH THE RJ IN SIGHT OVERHEAD. THE OPS MGR DID NOT ADVISE ALL CTLRS IN A TIMELY MANNER THAT WE HAD CHANGED CONFIGNS.

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