Narrative:

After fpr was loaded into the FMS; our flight received a pre departure clearance that listed our original flight plan route and underneath the original route; an ATC clearance line had a revised departure SID. No highlighted notes; nor was a revised clearance noted on the pre departure clearance. Other times that have had a revised route we were not able to obtain a pre departure clearance; rather we have been instructed to contact clearance delivery for the revised clearance. After takeoff on departure vector; ATC asked us to fly direct to revised route point; which we did after confirmation of new clearance. Callback conversation with reporter revealed the following information: reporter advised the aircraft was a B767; the pre departure clearance was received via ACARS and printed out on the cockpit thermal printer. Reporter emphasized that the pre departure clearance printout included the fpr including the rambln departure but in a separate part of the printout the revised segment which changed the rambln to the cokem RNAV SID was shown. Reporter was curious why a clearance generated by ATC would include any information other than the cleared route. He felt that; as in this instance; the add on revision could be overlooked and a potentially dangerous track deviation occur in crowded terminal airspace. Reporter asked; rhetorically; why the pre departure clearance clearance needs to include anything other than the content that would be given live by an ATCT clearance delivery person. Clearance delivered in that fashion contain only language pertinent to the actual operation expected of the flight.

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Original NASA ASRS Text

Title: A TRACK DEV OCCURS WHEN THE FLT CREW OF FMS EQUIPPED ACFT FAIL TO PROGRAM REVISED SID RECEIVED VIA PDC.

Narrative: AFTER FPR WAS LOADED INTO THE FMS; OUR FLT RECEIVED A PDC THAT LISTED OUR ORIGINAL FLT PLAN RTE AND UNDERNEATH THE ORIGINAL RTE; AN ATC CLRNC LINE HAD A REVISED DEP SID. NO HIGHLIGHTED NOTES; NOR WAS A REVISED CLRNC NOTED ON THE PDC. OTHER TIMES THAT HAVE HAD A REVISED RTE WE WERE NOT ABLE TO OBTAIN A PDC; RATHER WE HAVE BEEN INSTRUCTED TO CONTACT CLRNC DELIVERY FOR THE REVISED CLRNC. AFTER TKOF ON DEP VECTOR; ATC ASKED US TO FLY DIRECT TO REVISED RTE POINT; WHICH WE DID AFTER CONFIRMATION OF NEW CLRNC. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR ADVISED THE ACFT WAS A B767; THE PDC WAS RECEIVED VIA ACARS AND PRINTED OUT ON THE COCKPIT THERMAL PRINTER. RPTR EMPHASIZED THAT THE PDC PRINTOUT INCLUDED THE FPR INCLUDING THE RAMBLN DEP BUT IN A SEPARATE PART OF THE PRINTOUT THE REVISED SEGMENT WHICH CHANGED THE RAMBLN TO THE COKEM RNAV SID WAS SHOWN. RPTR WAS CURIOUS WHY A CLRNC GENERATED BY ATC WOULD INCLUDE ANY INFO OTHER THAN THE CLRED RTE. HE FELT THAT; AS IN THIS INSTANCE; THE ADD ON REVISION COULD BE OVERLOOKED AND A POTENTIALLY DANGEROUS TRACK DEV OCCUR IN CROWDED TERMINAL AIRSPACE. RPTR ASKED; RHETORICALLY; WHY THE PDC CLRNC NEEDS TO INCLUDE ANYTHING OTHER THAN THE CONTENT THAT WOULD BE GIVEN LIVE BY AN ATCT CLRNC DELIVERY PERSON. CLRNC DELIVERED IN THAT FASHION CONTAIN ONLY LANGUAGE PERTINENT TO THE ACTUAL OP EXPECTED OF THE FLT.

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.