CL60 FLC HAS A HDG TRACK DEV WHEN MISINTERP ZLA CTLR'S AMENDED CLRNC RTE CHANGE 60 NM SSW OF LAS; NV.

Narrative

WE HAD DEPARTED BUR ENRTE TO PHL. OUR CLRNC HAD BEEN THE VNY 7; PMD TRANSITION HEC J64. AT SOME POINT DURING OUR CLB; WE WERE GIVEN NUMEROUS VECTORS FOR TFC. I BELIEVE WE HAD JUST PASSED HEC; AND WERE ON A VECTOR TO THE N. CTR ADVISED THAT OUT OF FL260 WE WERE CLRED DIRECT LAS VEGAS; DIRECT HILL CITY; THEN AS FILED. LAS VEGAS WAS NOT ON THE ORIGINAL CLRNC AND FLT PLAN I PULLED OUT THE ENRTE CHART AND SAW LAS VEGAS (LVS) AND HILL CITY (HLC) AND ASSUMED CTR HAD CHANGED OUR RTE TO A MORE SOUTHERLY ONE FOR WX. FROM OUR PRESENT POS; LVS WAS DUE E. SHORTLY AFTER TURNING TOWARDS LVS; NM; CTR ASKED WHAT OUR CLRNC WAS. I SAID WE WERE GIVEN DIRECT LAS VEGAS; DIRECT HILL CITY OUR OF FL260. HE SAID LAS VEGAS WAS N OF US; AND HAD US TURN TO A HDG OF 350 DEGS. HE NOTED WE PROBABLY HAD ENTERED LAS VEGAS; NM; INTO THE FMS; WHICH WE HAD. I SEE HOW THE ERROR OCCURRED -- CTR NEVER CLARIFIED WHICH LAS VEGAS. WHEN LOOKING AT THE CHART; BOTH COULD HAVE BEEN ASSUMED; ALTHOUGH LAS VEGAS; NV; WAS MUCH CLOSER. THE CLRNC WAS GIVEN AS 'DIRECT LAS VEGAS; DIRECT HILL CITY.' I DIDN'T CATCH THE 2 POSSIBILITIES AND INPUTTED THE WRONG ONE.