MD80 experiences track deviation on transition portion of the triss RNAV SID from dfw.

Attributes
ACN	689847
Time
Date	200603
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	msl single value : 19000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw.artcc
Operator	common carrier : air carrier
Make Model Name	MD-80 Series (DC-9-80) Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : triss
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	689847
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	689848
Events
Anomaly	aircraft equipment problem : critical non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued advisory flight crew : returned to intended or assigned course
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Chart Or Publication Flight Crew Human Performance Aircraft
Primary Problem	Ambiguous
Air Traffic Incident	Pilot Deviation
Situations
Chart	sid : triss

Narrative:

On initial climb out from dfw on TRISS2 departure with a txk transition we were given direct to triss. We had not yet reached jgirl. We turned towards triss initially and then plugged triss direct into FMS. Passing triss; ZFW said we were north of course. He asked what point we were proceeding to. Txk was the active waypoint and navigation trk annunciated. We informed ZFW that we were proceeding to txk. They said that we has missed shero and gave us clearance to proceed direct to txk.

Original NASA ASRS Text

Title: MD80 EXPERIENCES TRACK DEV ON TRANSITION PORTION OF THE TRISS RNAV SID FROM DFW.

Narrative: ON INITIAL CLBOUT FROM DFW ON TRISS2 DEP WITH A TXK TRANSITION WE WERE GIVEN DIRECT TO TRISS. WE HAD NOT YET REACHED JGIRL. WE TURNED TOWARDS TRISS INITIALLY AND THEN PLUGGED TRISS DIRECT INTO FMS. PASSING TRISS; ZFW SAID WE WERE N OF COURSE. HE ASKED WHAT POINT WE WERE PROCEEDING TO. TXK WAS THE ACTIVE WAYPOINT AND NAV TRK ANNUNCIATED. WE INFORMED ZFW THAT WE WERE PROCEEDING TO TXK. THEY SAID THAT WE HAS MISSED SHERO AND GAVE US CLRNC TO PROCEED DIRECT TO TXK.

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.