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B767-300 deviates from departure track on soldo RNAV departure from dfw. Failed to engage in lateral navigation mode as required.
| Attributes | |
| ACN | 694364 |
| Time | |
| Date | 200604 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw.airport |
| State Reference | TX |
| Altitude | msl bound lower : 2000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : dfw.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : takeoff climbout : initial |
| Route In Use | departure sid : soldo rnav |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 7000 |
| ASRS Report | 694364 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure non adherence : clearance other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued advisory flight crew : returned to intended or assigned course |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were assigned the SOLDO2 RNAV departure with the sqs transition. Standard air carrier procedure dictates the selection of a lateral navigation mode of flight at 400 ft AGL. The selection of LNAV was not initiated until well after 1500 ft. The aircraft rate of climb was in excess of 4000 ft per minute due to our zero passenger and baggage load. As a result of the delayed selection of lateral navigation mode; the aircraft was allowed to drift slightly west of the departure course which resulted in a TA and prompted ATC to question our flight path. By the time ATC questioned our deviation; the aircraft was on a correction course back to the proper departure path; and ATC acknowledged the correction. It is unclear whether or not the TA was due to our deviation or a normal occurrence due to the close parallel departure procedures at dfw. There was no further dialogue between ourselves and dfw regarding the deviation.
Original NASA ASRS Text
Title: B767-300 DEVIATES FROM DEP TRACK ON SOLDO RNAV DEP FROM DFW. FAILED TO ENGAGE IN LATERAL NAV MODE AS REQUIRED.
Narrative: WE WERE ASSIGNED THE SOLDO2 RNAV DEP WITH THE SQS TRANSITION. STANDARD ACR PROC DICTATES THE SELECTION OF A LATERAL NAVIGATION MODE OF FLT AT 400 FT AGL. THE SELECTION OF LNAV WAS NOT INITIATED UNTIL WELL AFTER 1500 FT. THE ACFT RATE OF CLB WAS IN EXCESS OF 4000 FT PER MINUTE DUE TO OUR ZERO PAX AND BAGGAGE LOAD. AS A RESULT OF THE DELAYED SELECTION OF LATERAL NAV MODE; THE ACFT WAS ALLOWED TO DRIFT SLIGHTLY W OF THE DEP COURSE WHICH RESULTED IN A TA AND PROMPTED ATC TO QUESTION OUR FLT PATH. BY THE TIME ATC QUESTIONED OUR DEV; THE ACFT WAS ON A CORRECTION COURSE BACK TO THE PROPER DEP PATH; AND ATC ACKNOWLEDGED THE CORRECTION. IT IS UNCLEAR WHETHER OR NOT THE TA WAS DUE TO OUR DEV OR A NORMAL OCCURRENCE DUE TO THE CLOSE PARALLEL DEP PROCS AT DFW. THERE WAS NO FURTHER DIALOGUE BETWEEN OURSELVES AND DFW REGARDING THE DEV.
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.