B737-800 flight crew loses transition waypoints on nobly RNAV SID/lit transition from dfw.

Attributes
ACN	702977
Time
Date	200607
Local Time Of Day	1801 To 2400
Place
Locale Reference	intersection : nobly
State Reference	TX
Altitude	msl single value : 26000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zfw.artcc tower : ase.tower
Operator	common carrier : air carrier
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	702977
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	702973
Events
Anomaly	aircraft equipment problem : critical non adherence : published procedure non adherence : clearance other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued advisory flight crew : returned to intended or assigned course
Supplementary
Problem Areas	Chart Or Publication Aircraft Flight Crew Human Performance
Primary Problem	Ambiguous
Air Traffic Incident	Pilot Deviation

Narrative:

During climb out after passing nobly; ATC asked us if we were proceeding to ortro. I looked at the FMC and noted we were tracking to lit. ATC requested we track to ortro as per the departure routing. I loaded the flight plan at the gate and checked the route against the flight plan and clearance with the first officer and did not notice the absence of cobug and ortro prior to leaving the gate. I do not know if either it was missed prior to departure or was dropped during the flight.

Original NASA ASRS Text

Title: B737-800 FLT CREW LOSES TRANSITION WAYPOINTS ON NOBLY RNAV SID/LIT TRANSITION FROM DFW.

Narrative: DURING CLBOUT AFTER PASSING NOBLY; ATC ASKED US IF WE WERE PROCEEDING TO ORTRO. I LOOKED AT THE FMC AND NOTED WE WERE TRACKING TO LIT. ATC REQUESTED WE TRACK TO ORTRO AS PER THE DEP ROUTING. I LOADED THE FLT PLAN AT THE GATE AND CHKED THE RTE AGAINST THE FLT PLAN AND CLRNC WITH THE FO AND DID NOT NOTICE THE ABSENCE OF COBUG AND ORTRO PRIOR TO LEAVING THE GATE. I DO NOT KNOW IF EITHER IT WAS MISSED PRIOR TO DEP OR WAS DROPPED DURING THE FLT.

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.