Large transport flies through localizer course on ATC vector heading while ATC expects course intercept. Readback hearback problem.

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Attributes
ACN	145781
Time
Date	199005
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other cruise other descent : approach
Route In Use	arrival other enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 130 flight time total : 5000 flight time type : 300
ASRS Report	145781
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : flight engineer
Experience	flight time last 90 days : 100 flight time total : 4000 flight time type : 720
ASRS Report	146147
Events
Anomaly	non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : returned to intended course or assigned course other
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error Pilot Deviation other

Narrative:

Approaching dfw area approach control descended our flight to 5000', changed approach controllers. Then assigned heading of 090 degrees for vectors. We inquired which runway to expect and the controller apologized and advised we would be using runway 13R. We continued on 090 degree heading. There was a lot of traffic and I expect some transmission were blocked. I commented to first officer that we were flying through localizer. About that time the controller gave us an immediate right turn to intercept the localizer and descend (to 3000', I think). He seemed surprised that we had not initiated a turn and indicated there was traffic climbing ahead ot 6000'. We indicted that we were surprised they ha let us fly through localizer--we were about to call him when he called us. We indicated that we had not received nor acknowledged a turn or approach clearance. We suspect a transmission blockage. Is this a hearback problem? There were no other discussions/inquiries. We know of no approach or aircraft conflicts. The subsequent approach and landing was otherwise normal.

Original NASA ASRS Text

Title: LGT FLIES THROUGH LOC COURSE ON ATC VECTOR HEADING WHILE ATC EXPECTS COURSE INTERCEPT. READBACK HEARBACK PROBLEM.

Narrative: APCHING DFW AREA APCH CTL DSNDED OUR FLT TO 5000', CHANGED APCH CTLRS. THEN ASSIGNED HDG OF 090 DEGS FOR VECTORS. WE INQUIRED WHICH RWY TO EXPECT AND THE CTLR APOLOGIZED AND ADVISED WE WOULD BE USING RWY 13R. WE CONTINUED ON 090 DEG HDG. THERE WAS A LOT OF TFC AND I EXPECT SOME XMISSION WERE BLOCKED. I COMMENTED TO F/O THAT WE WERE FLYING THROUGH LOC. ABOUT THAT TIME THE CTLR GAVE US AN IMMEDIATE RIGHT TURN TO INTERCEPT THE LOC AND DSND (TO 3000', I THINK). HE SEEMED SURPRISED THAT WE HAD NOT INITIATED A TURN AND INDICATED THERE WAS TFC CLBING AHEAD OT 6000'. WE INDICTED THAT WE WERE SURPRISED THEY HA LET US FLY THROUGH LOC--WE WERE ABOUT TO CALL HIM WHEN HE CALLED US. WE INDICATED THAT WE HAD NOT RECEIVED NOR ACKNOWLEDGED A TURN OR APCH CLRNC. WE SUSPECT A XMISSION BLOCKAGE. IS THIS A HEARBACK PROB? THERE WERE NO OTHER DISCUSSIONS/INQUIRIES. WE KNOW OF NO APCH OR ACFT CONFLICTS. THE SUBSEQUENT APCH AND LNDG WAS OTHERWISE NORMAL.

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.