Air carrier flight crew forgets which VOR is being used. Heading deviation.

Attributes
ACN	140506
Time
Date	199003
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : dag
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zla
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other
Route In Use	departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 15000 flight time type : 10000
ASRS Report	140506
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	other controllera
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were cleared from las to lax via oasis 6 SID, hector transition J64 civet. I flew the dag 031 degree right, being mindful to change over at the las 37 DME point. I had 211 degrees set in the HSI. Noticed on the high 2 chart that the outbnd radial from hec was 211 degrees. Thought to myself that I could straight over hec, not remembering that I was navigating on dag. ZLA brought it to our attention as we passed over dag. We had had 2 early morning wake-ups, fairly long days, were sitting in the warm sun and were pretty drowsy. None of us caught the mistake.

Original NASA ASRS Text

Title: ACR FLT CREW FORGETS WHICH VOR IS BEING USED. HEADING DEVIATION.

Narrative: WE WERE CLRED FROM LAS TO LAX VIA OASIS 6 SID, HECTOR TRANSITION J64 CIVET. I FLEW THE DAG 031 DEG R, BEING MINDFUL TO CHANGE OVER AT THE LAS 37 DME POINT. I HAD 211 DEGS SET IN THE HSI. NOTICED ON THE HIGH 2 CHART THAT THE OUTBND RADIAL FROM HEC WAS 211 DEGS. THOUGHT TO MYSELF THAT I COULD STRAIGHT OVER HEC, NOT REMEMBERING THAT I WAS NAVIGATING ON DAG. ZLA BROUGHT IT TO OUR ATTN AS WE PASSED OVER DAG. WE HAD HAD 2 EARLY MORNING WAKE-UPS, FAIRLY LONG DAYS, WERE SITTING IN THE WARM SUN AND WERE PRETTY DROWSY. NONE OF US CAUGHT THE MISTAKE.

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.