MD80 flight crew fails to fly expected transition route on clare RNAV SID from dfw.

Attributes
ACN	684253
Time
Date	200601
Local Time Of Day	1801 To 2400
Place
Locale Reference	intersection : tekbe
State Reference	TX
Altitude	msl single value : 18000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zfw.artcc
Operator	common carrier : air carrier
Make Model Name	MD-88
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : clare
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	684253
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	684251
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
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance Chart Or Publication
Primary Problem	Ambiguous
Air Traffic Incident	Pilot Deviation

Narrative:

The ATC clearance was verified against the FMS entries and the flight plan. The flight was cleared; dfw-jax; CLARE2 RNAV departure; swb; as filed. The flight plan and all waypoints along the route were checked and verified prior to gate departure. Flight departed runway 35L at dfw normally. At 400 ft navigation mode engaged; with autoplt coming on at 500 ft. The flight tracked normally along the clare departure. The speed was adjusted to normal after passing mavvs. The flight passed clare with fuel and time being noted. At this time both pilots adjusted the range scales for en route climb and WX avoidance. All appeared normal. ATC inquired if we were on the CLARE2 departure; I replied; 'yes.' ATC then informed us we were not tracking to tekbe. I replied that the winds were strong at altitude; and he then gave us a heading for tekbe then cleared us to swb. ATC asked if we were cleared by departure control direct to clare; we replied no. It was then determined by the crew that the 2 waypoints; poten and tekbe; for some reason were dropped from the FMS; and that the aircraft proceeded clare direct swb. ATC said that there were no conflicts but needed to follow up for the RNAV program at dfw.supplemental information from acn 684251: we checked our clearance for flight dfw-jax against our FMS entries (runway 35L along with the CLARE2.clare RNAV departure points and flight plane route).

Original NASA ASRS Text

Title: MD80 FLT CREW FAILS TO FLY EXPECTED TRANSITION RTE ON CLARE RNAV SID FROM DFW.

Narrative: THE ATC CLRNC WAS VERIFIED AGAINST THE FMS ENTRIES AND THE FLT PLAN. THE FLT WAS CLRED; DFW-JAX; CLARE2 RNAV DEP; SWB; AS FILED. THE FLT PLAN AND ALL WAYPOINTS ALONG THE RTE WERE CHKED AND VERIFIED PRIOR TO GATE DEP. FLT DEPARTED RWY 35L AT DFW NORMALLY. AT 400 FT NAV MODE ENGAGED; WITH AUTOPLT COMING ON AT 500 FT. THE FLT TRACKED NORMALLY ALONG THE CLARE DEP. THE SPD WAS ADJUSTED TO NORMAL AFTER PASSING MAVVS. THE FLT PASSED CLARE WITH FUEL AND TIME BEING NOTED. AT THIS TIME BOTH PLTS ADJUSTED THE RANGE SCALES FOR ENRTE CLB AND WX AVOIDANCE. ALL APPEARED NORMAL. ATC INQUIRED IF WE WERE ON THE CLARE2 DEP; I REPLIED; 'YES.' ATC THEN INFORMED US WE WERE NOT TRACKING TO TEKBE. I REPLIED THAT THE WINDS WERE STRONG AT ALT; AND HE THEN GAVE US A HDG FOR TEKBE THEN CLRED US TO SWB. ATC ASKED IF WE WERE CLRED BY DEP CTL DIRECT TO CLARE; WE REPLIED NO. IT WAS THEN DETERMINED BY THE CREW THAT THE 2 WAYPOINTS; POTEN AND TEKBE; FOR SOME REASON WERE DROPPED FROM THE FMS; AND THAT THE ACFT PROCEEDED CLARE DIRECT SWB. ATC SAID THAT THERE WERE NO CONFLICTS BUT NEEDED TO FOLLOW UP FOR THE RNAV PROGRAM AT DFW.SUPPLEMENTAL INFO FROM ACN 684251: WE CHKED OUR CLRNC FOR FLT DFW-JAX AGAINST OUR FMS ENTRIES (RWY 35L ALONG WITH THE CLARE2.CLARE RNAV DEP POINTS AND FLT PLANE RTE).

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.