<< >> NASA ASRS Report 682850, December 2005

C560 xl on RNAV SID from dfw loses transition waypoints when departure runway is changed after initial route activation.

Attributes
ACN	682850
Time
Date	200512
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw.airport
State Reference	TX
Altitude	msl single value : 17000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : d10.tracon
Operator	general aviation : corporate
Make Model Name	Citation Excel
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 5300 flight time type : 500
ASRS Report	682850
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Events
Anomaly	other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued advisory flight crew : returned to intended or assigned course
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Ambiguous

Narrative:

Originally out of dfw we were given an RNAV departure off of runway 18L. On taxi this was changed to runway 17R. I changed the departure runway on this SID in the FMS. Upon reaching the point where the transition began; the aircraft did not join the transition and turned toward the point on our flight plan after the transition point. We caught the problem and after ATC queried us; we reprogrammed the FMS and continued on. I am not sure if the FMS malfunctioned or I erred in programming it. I will be even more diligent in checking the FMS in the future. I am filing this report on behalf of myself and my copilot.

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Original NASA ASRS Text

Title: C560 XL ON RNAV SID FROM DFW LOSES TRANSITION WAYPOINTS WHEN DEP RWY IS CHANGED AFTER INITIAL RTE ACTIVATION.

Narrative: ORIGINALLY OUT OF DFW WE WERE GIVEN AN RNAV DEP OFF OF RWY 18L. ON TAXI THIS WAS CHANGED TO RWY 17R. I CHANGED THE DEP RWY ON THIS SID IN THE FMS. UPON REACHING THE POINT WHERE THE TRANSITION BEGAN; THE ACFT DID NOT JOIN THE TRANSITION AND TURNED TOWARD THE POINT ON OUR FLT PLAN AFTER THE TRANSITION POINT. WE CAUGHT THE PROBLEM AND AFTER ATC QUERIED US; WE REPROGRAMMED THE FMS AND CONTINUED ON. I AM NOT SURE IF THE FMS MALFUNCTIONED OR I ERRED IN PROGRAMMING IT. I WILL BE EVEN MORE DILIGENT IN CHKING THE FMS IN THE FUTURE. I AM FILING THIS RPT ON BEHALF OF MYSELF AND MY COPLT.

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.