Narrative:

Flight X, a DC10-30 from iad to bos field via swann intersection, bross intersection, J42. First officer flying, I was PNF. After handoff from iad departure control, center cleared us direct to swann intersection - fpr. INS was used to proceed direct. As backup I used VOR to identify swann and bross. Shortly thereafter the aircraft started what I thought was a premature turn northbound onto J42. I advised the first officer to go to heading select until we figured out the problem. By the time we decided the machine was correct in turning, we overflew J42. ZDC inquired why we did not turn onto J42. I estimate we were 9 mi from the centerline of J42. There was no apparent loss of separation, and we were cleared direct rbu VOR fpr. A contributing factor may have been the fact this flight had been rerted in the air. Originally mem-fll-mem, approximately tlh VOR sbound, we were asked to proceed to bos. Unable to make bos because of WX and fuel, I elected to stop in iad and then continue to bos. From the rerte point the crew was very busy with rerte paperwork, WX avoidance and briefing procedures into iad. I feel we allowed ourselves to be rushed to make schedule.

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Original NASA ASRS Text

Title: THE FLC DISABLED THEIR LNAV WHEN THEY ERRONEOUSLY THOUGHT THE PROGRAMMED TURN WAS SUPPOSED TO BE FARTHER AWAY. THE CREW THEREFORE WAS LATE IN TURNING ALONG THEIR COURSE.

Narrative: FLT X, A DC10-30 FROM IAD TO BOS FIELD VIA SWANN INTXN, BROSS INTXN, J42. FO FLYING, I WAS PNF. AFTER HDOF FROM IAD DEP CTL, CTR CLRED US DIRECT TO SWANN INTXN - FPR. INS WAS USED TO PROCEED DIRECT. AS BACKUP I USED VOR TO IDENT SWANN AND BROSS. SHORTLY THEREAFTER THE ACFT STARTED WHAT I THOUGHT WAS A PREMATURE TURN NBOUND ONTO J42. I ADVISED THE FO TO GO TO HDG SELECT UNTIL WE FIGURED OUT THE PROB. BY THE TIME WE DECIDED THE MACHINE WAS CORRECT IN TURNING, WE OVERFLEW J42. ZDC INQUIRED WHY WE DID NOT TURN ONTO J42. I ESTIMATE WE WERE 9 MI FROM THE CTRLINE OF J42. THERE WAS NO APPARENT LOSS OF SEPARATION, AND WE WERE CLRED DIRECT RBU VOR FPR. A CONTRIBUTING FACTOR MAY HAVE BEEN THE FACT THIS FLT HAD BEEN RERTED IN THE AIR. ORIGINALLY MEM-FLL-MEM, APPROX TLH VOR SBOUND, WE WERE ASKED TO PROCEED TO BOS. UNABLE TO MAKE BOS BECAUSE OF WX AND FUEL, I ELECTED TO STOP IN IAD AND THEN CONTINUE TO BOS. FROM THE RERTE POINT THE CREW WAS VERY BUSY WITH RERTE PAPERWORK, WX AVOIDANCE AND BRIEFING PROCS INTO IAD. I FEEL WE ALLOWED OURSELVES TO BE RUSHED TO MAKE SCHEDULE.

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.