Narrative:

How the problem arose: originally cleared direct from sjn to cim, then changed via pre departure clearance to fly J-18 between sjn and cim. We didn't do the change -- went direct cim from sjn. Contributing factors: 1) both the flight plan and the pre departure clearance ('flight plan routing' portion) say go direct. The pre departure clearance 'ATC clearance' portion says fly the airway to abq then cim. A little confusing, I think the pre departure clearance should not repeat the flight plan if it is no longer valid. 2) right after takeoff, the controller gave us a 050 degree heading for sjn when able. Without double-checking the new routing, I thought he was skipping the rest of the departure SID and the changed routing. How it was discovered: the controller queried us a few mi past sjn. Corrective actions: we offered to go over abq, but the controller said there was no traffic and not to worry, go direct cim. Supplemental information from acn 257378: I think that there are 2 things that could be done in the future to avoid this situation. Eliminate the flight plan routing from the pre departure clearance in those instances where the clearance is not as filed. Having 2 rtes on the pre departure clearance can be confusing!

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Original NASA ASRS Text

Title: CREW BEGAN TO FLY DIRECT FROM SHN TO CIM RATHER THAN VIA J-18 AS AMENDED BY THEIR PDC.

Narrative: HOW THE PROB AROSE: ORIGINALLY CLRED DIRECT FROM SJN TO CIM, THEN CHANGED VIA PDC TO FLY J-18 BTWN SJN AND CIM. WE DIDN'T DO THE CHANGE -- WENT DIRECT CIM FROM SJN. CONTRIBUTING FACTORS: 1) BOTH THE FLT PLAN AND THE PDC ('FLT PLAN ROUTING' PORTION) SAY GO DIRECT. THE PDC 'ATC CLRNC' PORTION SAYS FLY THE AIRWAY TO ABQ THEN CIM. A LITTLE CONFUSING, I THINK THE PDC SHOULD NOT REPEAT THE FLT PLAN IF IT IS NO LONGER VALID. 2) RIGHT AFTER TKOF, THE CTLR GAVE US A 050 DEG HDG FOR SJN WHEN ABLE. WITHOUT DOUBLE-CHKING THE NEW ROUTING, I THOUGHT HE WAS SKIPPING THE REST OF THE DEP SID AND THE CHANGED ROUTING. HOW IT WAS DISCOVERED: THE CTLR QUERIED US A FEW MI PAST SJN. CORRECTIVE ACTIONS: WE OFFERED TO GO OVER ABQ, BUT THE CTLR SAID THERE WAS NO TFC AND NOT TO WORRY, GO DIRECT CIM. SUPPLEMENTAL INFO FROM ACN 257378: I THINK THAT THERE ARE 2 THINGS THAT COULD BE DONE IN THE FUTURE TO AVOID THIS SIT. ELIMINATE THE FLT PLAN ROUTING FROM THE PDC IN THOSE INSTANCES WHERE THE CLRNC IS NOT AS FILED. HAVING 2 RTES ON THE PDC CAN BE CONFUSING!

Data retrieved from NASA's ASRS site as of July 2007 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.