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Medium large transport aircraft in cruise was off course due to misprogramming FMC. Center controller intervened and issued new clearance.
| Attributes | |
| ACN | 399600 |
| Time | |
| Date | 199804 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : hpw |
| State Reference | VA |
| Altitude | msl bound lower : 22000 msl bound upper : 22000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc tower : roa |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : commercial pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 14700 flight time type : 6000 |
| ASRS Report | 399600 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | non adherence : clearance non adherence : published procedure other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We had just passed hpw. ZDC said we were off course, to turn left 180 degree heading. We did and there was no traffic conflict. He asked if we had been cleared to argal, we said yes. I told him we had our release, pre departure clearance clearance said after hpw, argal 4 to rdu. I checked the route on the fmcs and it showed after hpw, argal 4. The first officer was new. When entering the route lga-RDU1, he went to departure arrival page and re-entered argal 4. When the transition came up, it showed 'actin.' he pushed 'exec.' this dropped out the hpw transition to the argal 4 and left a route discontinuity. He went back to the route page and brought argal to hpw. This was wrong because it dropped out the hpw transition. When I checked our route, it looked correct because after hpw, argal 4 was shown, and that was correct on the route page. The error could have been found on the legs page. The first officer could have told me he was unsure about entering the route.
Original NASA ASRS Text
Title: MLG ACFT IN CRUISE WAS OFF COURSE DUE TO MISPROGRAMMING FMC. CTR CTLR INTERVENED AND ISSUED NEW CLRNC.
Narrative: WE HAD JUST PASSED HPW. ZDC SAID WE WERE OFF COURSE, TO TURN L 180 DEG HDG. WE DID AND THERE WAS NO TFC CONFLICT. HE ASKED IF WE HAD BEEN CLRED TO ARGAL, WE SAID YES. I TOLD HIM WE HAD OUR RELEASE, PDC CLRNC SAID AFTER HPW, ARGAL 4 TO RDU. I CHKED THE RTE ON THE FMCS AND IT SHOWED AFTER HPW, ARGAL 4. THE FO WAS NEW. WHEN ENTERING THE RTE LGA-RDU1, HE WENT TO DEP ARR PAGE AND RE-ENTERED ARGAL 4. WHEN THE TRANSITION CAME UP, IT SHOWED 'ACTIN.' HE PUSHED 'EXEC.' THIS DROPPED OUT THE HPW TRANSITION TO THE ARGAL 4 AND LEFT A RTE DISCONTINUITY. HE WENT BACK TO THE RTE PAGE AND BROUGHT ARGAL TO HPW. THIS WAS WRONG BECAUSE IT DROPPED OUT THE HPW TRANSITION. WHEN I CHKED OUR RTE, IT LOOKED CORRECT BECAUSE AFTER HPW, ARGAL 4 WAS SHOWN, AND THAT WAS CORRECT ON THE RTE PAGE. THE ERROR COULD HAVE BEEN FOUND ON THE LEGS PAGE. THE FO COULD HAVE TOLD ME HE WAS UNSURE ABOUT ENTERING THE RTE.
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.