Narrative:

Upon receiving our pre departure clearance in phx our original departure dryheat 2 departure dryheat transition and then direct cnx, had been revised to desert 1 departure dryheat transition, then direct gag. The captain did not notice the change in the pre departure clearance and mentioned this after I entered the change on the ground in phx. After noticing the new departure, the captain did not rechk the route in the FMC and assumed that I typed it in correctly. After departure and about 125 mi west of cnx, I noticed a discontinuity in our route after dryheat with cnx being the next fix. (The captain was busy on the other radio at the time.) I looked up at my flight plan briefly and saw that cnx was the next fix after dryheat and connected the 2 to fix the discontinuity, not realizing at the time that we had a revised pre departure clearance on the pedestal. About 25 mi west of cnx, the controller asked if we knew where we were and I responded 25 mi west of cnx approaching. The controller responded that a previous controller must not have told us to change and cleared us direct to mci, I believe, after going direct. I realized that after dryheat we should have been going direct gag instead of cnx due to the revised pre departure clearance. Apparently I didn't select the gag transition in the FMC and the captain didn't catch it because he didn't rechk the route after the pre departure clearance change. Better situational awareness might have helped. The previous controller never questioned our route as well, and the next controller didn't notice for quite some time, almost until we were at cnx. We were late from the gate because of phx operations being slow, which diverted our attention. More attention could have been paid on the part of ATC and both crew members.

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Original NASA ASRS Text

Title: AN LGT CREW, DEPARTING PHX, NEGLECTED TO ENTER THE REVISED ROUTING IN THE FMS, RESULTING IN A QUERY FROM ATC.

Narrative: UPON RECEIVING OUR PDC IN PHX OUR ORIGINAL DEP DRYHEAT 2 DEP DRYHEAT TRANSITION AND THEN DIRECT CNX, HAD BEEN REVISED TO DESERT 1 DEP DRYHEAT TRANSITION, THEN DIRECT GAG. THE CAPT DID NOT NOTICE THE CHANGE IN THE PDC AND MENTIONED THIS AFTER I ENTERED THE CHANGE ON THE GND IN PHX. AFTER NOTICING THE NEW DEP, THE CAPT DID NOT RECHK THE RTE IN THE FMC AND ASSUMED THAT I TYPED IT IN CORRECTLY. AFTER DEP AND ABOUT 125 MI W OF CNX, I NOTICED A DISCONTINUITY IN OUR RTE AFTER DRYHEAT WITH CNX BEING THE NEXT FIX. (THE CAPT WAS BUSY ON THE OTHER RADIO AT THE TIME.) I LOOKED UP AT MY FLT PLAN BRIEFLY AND SAW THAT CNX WAS THE NEXT FIX AFTER DRYHEAT AND CONNECTED THE 2 TO FIX THE DISCONTINUITY, NOT REALIZING AT THE TIME THAT WE HAD A REVISED PDC ON THE PEDESTAL. ABOUT 25 MI W OF CNX, THE CTLR ASKED IF WE KNEW WHERE WE WERE AND I RESPONDED 25 MI W OF CNX APCHING. THE CTLR RESPONDED THAT A PREVIOUS CTLR MUST NOT HAVE TOLD US TO CHANGE AND CLRED US DIRECT TO MCI, I BELIEVE, AFTER GOING DIRECT. I REALIZED THAT AFTER DRYHEAT WE SHOULD HAVE BEEN GOING DIRECT GAG INSTEAD OF CNX DUE TO THE REVISED PDC. APPARENTLY I DIDN'T SELECT THE GAG TRANSITION IN THE FMC AND THE CAPT DIDN'T CATCH IT BECAUSE HE DIDN'T RECHK THE RTE AFTER THE PDC CHANGE. BETTER SITUATIONAL AWARENESS MIGHT HAVE HELPED. THE PREVIOUS CTLR NEVER QUESTIONED OUR RTE AS WELL, AND THE NEXT CTLR DIDN'T NOTICE FOR QUITE SOME TIME, ALMOST UNTIL WE WERE AT CNX. WE WERE LATE FROM THE GATE BECAUSE OF PHX OPS BEING SLOW, WHICH DIVERTED OUR ATTN. MORE ATTN COULD HAVE BEEN PAID ON THE PART OF ATC AND BOTH CREW MEMBERS.

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.