C680 pilot flew through a localizer course due to improper setup of the autoflight system and had to...

Attributes
ACN	1116235
Time
Date	201309
Local Time Of Day	1201-1800
Place
Locale Reference	TEB.Airport
State Reference	NJ
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Cessna Citation Sovereign (C680)
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	FMS/FMC
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Private
Experience	Flight Crew Last 90 Days 100 Flight Crew Total 750 Flight Crew Type 110
Events
Anomaly	Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types

Narrative:

While setting up for the ILS 6 in teterboro; we were told to go direct vings; expect ILS 6. As requested we complied. About 1 mile form vings the controller asked us to turn to a 090 to intercept the localizer and cleared us for the approach. I put the plane in heading mode; 090; and pressed the approach button; something we have trained ourselves to [do] numerous times when cleared for and ILS. This [FMC] has a small quirk in it that I know about; but neglected to remember in this instance. When in heading mode; the appr button will not arm unless the needles are in the green or localizer mode. Therefore when I pressed the appr button I neglected to notice that it did not arm for this reason. We flew through the localizer and had to make a sharp and dramatic turn to re-intercept. No matter how much you know the equipment (and I pride myself on knowing it well) it is no substitute to being in front of the airplane and anticipating what it should and will do next. In addition; when you push a button make sure it does what you wanted it to do; [don't] just assume. This is precisely how something like this could be prevented in the future.

Original NASA ASRS Text

Title: C680 pilot flew through a localizer course due to improper setup of the autoflight system and had to make a 'sharp and dramatic' turn to re-intercept.

Narrative: While setting up for the ILS 6 in Teterboro; we were told to go direct VINGS; expect ILS 6. As requested we complied. About 1 mile form VINGS the Controller asked us to turn to a 090 to intercept the localizer and cleared us for the approach. I put the plane in HDG mode; 090; and pressed the approach button; something we have trained ourselves to [do] numerous times when cleared for and ILS. This [FMC] has a small quirk in it that I know about; but neglected to remember in this instance. When in HDG mode; the APPR button will not arm unless the needles are in the GREEN or LOC mode. Therefore when I pressed the APPR button I neglected to notice that it did not ARM for this reason. We flew through the localizer and had to make a sharp and dramatic turn to re-intercept. No matter how much you know the equipment (and I pride myself on knowing it well) it is no substitute to being in front of the airplane and anticipating what it should and will do next. In addition; when you push a button make sure it does what you wanted it to do; [don't] just assume. This is precisely how something like this could be prevented in the future.

Data retrieved from NASA's ASRS site as of July 2013 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.