MD80 flight crew experiences loss of FM transition waypoints on dfw RNAV SID; little rock transition...

Attributes
ACN	705594
Time
Date	200608
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : zfw.artcc
State Reference	TX
Altitude	msl single value : 23000
Aircraft 1
Controlling Facilities	artcc : zfw.artcc
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Route In Use	arrival other departure sid : nobly
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	705594
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : less severe non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance controller : issued advisory
Supplementary
Problem Areas	Chart Or Publication Flight Crew Human Performance Aircraft
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Having read the reports regarding deviations from the dfw RNAV departures; I carefully follow procedures regarding loading and verifying rtes and waypoints. This trip was no different. However; on departure; ZFW called to say we were left of track; and cleared us direct ortro; flight plan. I looked at the map display and saw we were tracking direct lit. I have no idea how this occurred; and don't understand why the waypoints dropped out. I will be more vigilant.

Original NASA ASRS Text

Title: MD80 FLT CREW EXPERIENCES LOSS OF FM TRANSITION WAYPOINTS ON DFW RNAV SID; LITTLE ROCK TRANSITION.

Narrative: HAVING READ THE REPORTS REGARDING DEVS FROM THE DFW RNAV DEPS; I CAREFULLY FOLLOW PROCS REGARDING LOADING AND VERIFYING RTES AND WAYPOINTS. THIS TRIP WAS NO DIFFERENT. HOWEVER; ON DEP; ZFW CALLED TO SAY WE WERE L OF TRACK; AND CLRED US DIRECT ORTRO; FLT PLAN. I LOOKED AT THE MAP DISPLAY AND SAW WE WERE TRACKING DIRECT LIT. I HAVE NO IDEA HOW THIS OCCURRED; AND DON'T UNDERSTAND WHY THE WAYPOINTS DROPPED OUT. I WILL BE MORE VIGILANT.

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.