FMS input error begets a heading track deviation by an FK10 flight crew with ZFW.

Attributes
ACN	439450
Time
Date	199906
Day	Wed
Local Time Of Day	0001 To 0600
Place
State Reference	OK
Altitude	msl single value : 17000
Environment
Light	Night
Aircraft 1
Controlling Facilities	artcc : zfw.artcc tower : tpa.tower
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : ns
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	769450
Person 2
Affiliation	company : air carrier
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Events
Anomaly	other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance controller : issued advisory
Supplementary
Problem Areas	Environmental Factor ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Location; 50 mi southeast of irw. Clearance to intercept 101 degree radial inbound to bowie. Input 190 degrees off of byp. Asked heading by ATC. On wrong heading for intercept. No traffic alerts. Asked for heading to intercept and input correct data in FMS. This occurred after 2 changes to departure clearance and 2 changes after departure. Flow control could do better job by getting clrncs right first time. When making for changes to FMS before FL180 to comply with clearance, increases workload to point where mistakes can happen.

Original NASA ASRS Text

Title: FMS INPUT ERROR BEGETS A HDG TRACK DEV BY AN FK10 FLC WITH ZFW.

Narrative: LOCATION; 50 MI SE OF IRW. CLRNC TO INTERCEPT 101 DEG RADIAL INBOUND TO BOWIE. INPUT 190 DEGS OFF OF BYP. ASKED HDG BY ATC. ON WRONG HDG FOR INTERCEPT. NO TFC ALERTS. ASKED FOR HDG TO INTERCEPT AND INPUT CORRECT DATA IN FMS. THIS OCCURRED AFTER 2 CHANGES TO DEP CLRNC AND 2 CHANGES AFTER DEP. FLOW CTL COULD DO BETTER JOB BY GETTING CLRNCS RIGHT FIRST TIME. WHEN MAKING FOR CHANGES TO FMS BEFORE FL180 TO COMPLY WITH CLRNC, INCREASES WORKLOAD TO POINT WHERE MISTAKES CAN HAPPEN.

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.