Narrative:

Both aircraft departed las on the wyldd 1 departure. Both aircraft were A319 airbuses. Both aircraft departed runway 19 at las, the second 3 NM in trail of the first. The first aircraft appeared to fly the departure procedure. The second aircraft turned east well before the designated turn point (idale) and was on an intercept course for the preceding aircraft. I vectored the second aircraft to avoid the first. If the second aircraft was using the autoplt/FMS to fly the route, the FMS did not fly the route very well. It is unknown if either aircraft was being hand flown.

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Original NASA ASRS Text

Title: AN A319 CREW, DEPARTING LAS, TURNED PREMATURELY CREATING AN INTERCEPT COURSE WITH PRECEDING DEP ACFT.

Narrative: BOTH ACFT DEPARTED LAS ON THE WYLDD 1 DEP. BOTH ACFT WERE A319 AIRBUSES. BOTH ACFT DEPARTED RWY 19 AT LAS, THE SECOND 3 NM IN TRAIL OF THE FIRST. THE FIRST ACFT APPEARED TO FLY THE DEP PROC. THE SECOND ACFT TURNED E WELL BEFORE THE DESIGNATED TURN POINT (IDALE) AND WAS ON AN INTERCEPT COURSE FOR THE PRECEDING ACFT. I VECTORED THE SECOND ACFT TO AVOID THE FIRST. IF THE SECOND ACFT WAS USING THE AUTOPLT/FMS TO FLY THE RTE, THE FMS DID NOT FLY THE RTE VERY WELL. IT IS UNKNOWN IF EITHER ACFT WAS BEING HAND FLOWN.

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.