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RNAV equipped widebody transport loses RNAV SID transition runway points when the runway is change prior to takeoff.
| Attributes | |
| ACN | 674715 |
| Time | |
| Date | 200510 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | intersection : cobug |
| State Reference | TX |
| Altitude | msl single value : 34000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw.artcc tower : las.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody Low Wing 3 Turbojet Eng |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : nobly |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | controller military : 10 controller non radar : 19 controller radar : 19 flight time last 90 days : 150 flight time total : 4000 flight time type : 150 |
| ASRS Report | 674715 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : clearance non adherence : published procedure other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued advisory flight crew : returned to original clearance |
| Supplementary | |
| Problem Areas | Chart Or Publication Flight Crew Human Performance Aircraft |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
After changing runways prior to departure from runway 13L to runway 17R at dfw in the FMS; two waypoints dropped out of the flight plan on the nobly 2 departure. The flight plan had been checked in the FMS; and the errors were not discovered until center advised us we were drifting north of course. We then went back through the points; and found where cobug and ortro had been dropped.
Original NASA ASRS Text
Title: RNAV EQUIPPED WDB LOSES RNAV SID TRANSITION RWY POINTS WHEN THE RWY IS CHANGE PRIOR TO TKOF.
Narrative: AFTER CHANGING RWYS PRIOR TO DEP FROM RWY 13L TO RWY 17R AT DFW IN THE FMS; TWO WAYPOINTS DROPPED OUT OF THE FLT PLAN ON THE NOBLY 2 DEP. THE FLT PLAN HAD BEEN CHKED IN THE FMS; AND THE ERRORS WERE NOT DISCOVERED UNTIL CTR ADVISED US WE WERE DRIFTING N OF COURSE. WE THEN WENT BACK THROUGH THE POINTS; AND FOUND WHERE COBUG AND ORTRO HAD BEEN DROPPED.
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.