MD80 encounters lost waypoint on clare RNAV SID/swb transition from dfw.

Attributes
ACN	699954
Time
Date	200606
Local Time Of Day	1801 To 2400
Place
Locale Reference	intersection : tekbe
State Reference	TX
Altitude	msl single value : 20000
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
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : clare2
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	699954
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
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	Aircraft Flight Crew Human Performance Chart Or Publication
Primary Problem	Ambiguous
Air Traffic Incident	Pilot Deviation

Narrative:

After a normal RNAV load and departure check; I made an uneventful takeoff and RNAV couple-up on the CLARE2 departure. Inbound to sawmill; center called and asked if we were on the departure. We said yes we were on the clare departure and inbound to swb. They said we need to go to tekbe first then swb. We looked at the box and tekbe was not in there so we loaded tekbe and made about a 15 degree correction to tekbe. A few minutes later; they called and asked us to contact center. We loaded the clare departure again and the box did in fact have all departure points including tekbe. I guess we failed to notice; that for whatever reason; the box dropped tekbe even with the departure correctly loaded and flying in navigation mode.

Original NASA ASRS Text

Title: MD80 ENCOUNTERS LOST WAYPOINT ON CLARE RNAV SID/SWB TRANSITION FROM DFW.

Narrative: AFTER A NORMAL RNAV LOAD AND DEP CHK; I MADE AN UNEVENTFUL TKOF AND RNAV COUPLE-UP ON THE CLARE2 DEP. INBOUND TO SAWMILL; CTR CALLED AND ASKED IF WE WERE ON THE DEP. WE SAID YES WE WERE ON THE CLARE DEP AND INBOUND TO SWB. THEY SAID WE NEED TO GO TO TEKBE FIRST THEN SWB. WE LOOKED AT THE BOX AND TEKBE WAS NOT IN THERE SO WE LOADED TEKBE AND MADE ABOUT A 15 DEG CORRECTION TO TEKBE. A FEW MINUTES LATER; THEY CALLED AND ASKED US TO CONTACT CTR. WE LOADED THE CLARE DEP AGAIN AND THE BOX DID IN FACT HAVE ALL DEP POINTS INCLUDING TEKBE. I GUESS WE FAILED TO NOTICE; THAT FOR WHATEVER REASON; THE BOX DROPPED TEKBE EVEN WITH THE DEP CORRECTLY LOADED AND FLYING IN NAV MODE.

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.