Flight crew of an medium large transport flew through the final localizer course due to checklist distraction and a mistake in believing that the FMS had been programmed to capture the localizer. ATC intervened and gave a vector for another interception.

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Attributes
ACN	338180
Time
Date	199606
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : iah
State Reference	TX
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : iah
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent : approach descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	other other : other pilot : instrument pilot : atp pilot : commercial
Experience	flight time last 90 days : 220 flight time total : 17000 flight time type : 8000
ASRS Report	338180
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : clearance other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Just prior to intercepting ILS runway 27 localizer on assigned heading of 300 degrees, I called for the approach checklist. Attention to approach was interrupted by an item on the checklist just as we were to intercept. We flew through localizer and just as I recognized error, ATC told us to turn left to heading 230 degrees and reintercept. They (ATC) questioned us and we told them we were correcting.

Original NASA ASRS Text

Title: FLC OF AN MLG FLEW THROUGH THE FINAL LOC COURSE DUE TO CHKLIST DISTR AND A MISTAKE IN BELIEVING THAT THE FMS HAD BEEN PROGRAMMED TO CAPTURE THE LOC. ATC INTERVENED AND GAVE A VECTOR FOR ANOTHER INTERCEPTION.

Narrative: JUST PRIOR TO INTERCEPTING ILS RWY 27 LOC ON ASSIGNED HDG OF 300 DEGS, I CALLED FOR THE APCH CHKLIST. ATTN TO APCH WAS INTERRUPTED BY AN ITEM ON THE CHKLIST JUST AS WE WERE TO INTERCEPT. WE FLEW THROUGH LOC AND JUST AS I RECOGNIZED ERROR, ATC TOLD US TO TURN L TO HDG 230 DEGS AND REINTERCEPT. THEY (ATC) QUESTIONED US AND WE TOLD THEM WE WERE CORRECTING.

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.