Narrative:

Las tower cleared position hold runway 19L, FMC had runway 19R captain changed to runway 19L and re-entered SID and V speeds. But alas, forgot transition to hector. ATC gave us a vector (150 degrees) to intercept SID to hec. Automation works great for the engine and airframe people and the owners and the pilots until someone throws you a curve and changes runways on you at last min! Callback conversation with reporter revealed the following information: the departure in use was the idale RNAV 1. There was an interruption that caused the pilot that was reprogramming the FMC to neglect selection of the hector transition. ATC caught the deviation as the aircraft turned direct to hector instead of the cleared transition route.

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Original NASA ASRS Text

Title: A TRACK DEV ON THE IDALE RNAV 1 DEP FROM LAS, NV. AFTER A LAST MIN RWY CHANGE AND REPROGRAMMING OF THE RNAV SYS.

Narrative: LAS TWR CLRED POS HOLD RWY 19L, FMC HAD RWY 19R CAPT CHANGED TO RWY 19L AND RE-ENTERED SID AND V SPDS. BUT ALAS, FORGOT TRANSITION TO HECTOR. ATC GAVE US A VECTOR (150 DEGS) TO INTERCEPT SID TO HEC. AUTOMATION WORKS GREAT FOR THE ENG AND AIRFRAME PEOPLE AND THE OWNERS AND THE PLTS UNTIL SOMEONE THROWS YOU A CURVE AND CHANGES RWYS ON YOU AT LAST MIN! CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE DEP IN USE WAS THE IDALE RNAV 1. THERE WAS AN INTERRUPTION THAT CAUSED THE PLT THAT WAS REPROGRAMMING THE FMC TO NEGLECT SELECTION OF THE HECTOR TRANSITION. ATC CAUGHT THE DEV AS THE ACFT TURNED DIRECT TO HECTOR INSTEAD OF THE CLRED TRANSITION RTE.

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.