An A319's FMGC dropped two sjc LOUPE1 lin departure waypoints after being cleared direct sjc.

Attributes
ACN	784091
Time
Date	200804
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sjc.airport
State Reference	CA
Altitude	msl single value : 14000
Aircraft 1
Controlling Facilities	tracon : nct.tracon
Operator	common carrier : air carrier
Make Model Name	A319
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : initial
Route In Use	departure sid : loupe
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 210 flight time total : 9600 flight time type : 700
ASRS Report	784091
Person 2
Affiliation	government : faa
Function	controller : departure
Events
Anomaly	non adherence : published procedure non adherence : clearance other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance controller : issued advisory
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

We were filed sjc.LOUPE1.lin for our flight to ZZZ. The FMGC was checked and verified with the paper chart. Climbing out of sjc; we followed the LOUPE1 procedure by turning to a heading of 120 degrees at 1.8 DME from sjc. While on that heading; departure told us to go direct to sjc and resume the departure. I punched in direct to sjc. Did not notice that 2 waypoints had dropped out. So after the sjc VOR we went to lin instead of proceeding to dyblo then lin. ATC noticed the deviation and inquired where we were going. That is when we noticed the error in the FMGC. Departure controller then cleared us direct to lin. There was no traffic conflict. We later confirmed that we both checked the departure prior to takeoff and it was correct in the FMGC. Not sure why the departure waypoints dropped out; but will remember to always doublechk the box.

Original NASA ASRS Text

Title: AN A319'S FMGC DROPPED TWO SJC LOUPE1 LIN DEP WAYPOINTS AFTER BEING CLRED DIRECT SJC.

Narrative: WE WERE FILED SJC.LOUPE1.LIN FOR OUR FLT TO ZZZ. THE FMGC WAS CHKED AND VERIFIED WITH THE PAPER CHART. CLBING OUT OF SJC; WE FOLLOWED THE LOUPE1 PROC BY TURNING TO A HDG OF 120 DEGS AT 1.8 DME FROM SJC. WHILE ON THAT HDG; DEP TOLD US TO GO DIRECT TO SJC AND RESUME THE DEP. I PUNCHED IN DIRECT TO SJC. DID NOT NOTICE THAT 2 WAYPOINTS HAD DROPPED OUT. SO AFTER THE SJC VOR WE WENT TO LIN INSTEAD OF PROCEEDING TO DYBLO THEN LIN. ATC NOTICED THE DEV AND INQUIRED WHERE WE WERE GOING. THAT IS WHEN WE NOTICED THE ERROR IN THE FMGC. DEP CTLR THEN CLRED US DIRECT TO LIN. THERE WAS NO TFC CONFLICT. WE LATER CONFIRMED THAT WE BOTH CHKED THE DEP PRIOR TO TKOF AND IT WAS CORRECT IN THE FMGC. NOT SURE WHY THE DEP WAYPOINTS DROPPED OUT; BUT WILL REMEMBER TO ALWAYS DOUBLECHK THE BOX.

Data retrieved from NASA's ASRS site as of May 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.