FA50 crew misinterped FMS and deviated from SID.

Attributes
ACN	495850
Time
Date	200012
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : las.airport
State Reference	NV
Altitude	msl single value : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : l30.tracon tower : syr.tower
Operator	general aviation : corporate
Make Model Name	Falcon 50
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	climbout : vacating altitude
Route In Use	departure sid : oasys 2.oasys
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 175 flight time total : 6500 flight time type : 450
ASRS Report	495850
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 179 flight time total : 3715 flight time type : 145
ASRS Report	495857
Events
Anomaly	non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Engaging the first portion of the oasys 2 departure from las, a misinterp of the FMS occurred. This interruption caused a deviation from course towards the final approach segment, making departure assign a corrective heading. In the future, I will use short range navigation to provide back-up navigation reliability.

Original NASA ASRS Text

Title: FA50 CREW MISINTERPED FMS AND DEVIATED FROM SID.

Narrative: ENGAGING THE FIRST PORTION OF THE OASYS 2 DEP FROM LAS, A MISINTERP OF THE FMS OCCURRED. THIS INTERRUPTION CAUSED A DEV FROM COURSE TOWARDS THE FINAL APCH SEGMENT, MAKING DEP ASSIGN A CORRECTIVE HDG. IN THE FUTURE, I WILL USE SHORT RANGE NAV TO PROVIDE BACK-UP NAV RELIABILITY.

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.