Medium large transport had near midair collision with small transport northwest of dfw.

Attributes
ACN	117871
Time
Date	198907
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : dfw
State Reference	TX
Altitude	msl bound lower : 4500 msl bound upper : 4500
Environment
Flight Conditions	Mixed
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach descent other
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	descent other
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time last 90 days : 210 flight time total : 10000 flight time type : 210
ASRS Report	117871
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 14000 flight time type : 4000
ASRS Report	118374
Events
Anomaly	conflict : nmac other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew Other
Miss Distance	horizontal : 100 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

We were approximately 22 NM northwest of dfw with clearance from approach control to maintain 4000' MSL at 210 KTS, heading 090 degrees to intercept runway 13R localizer. About a minute or more prior to occurrence traffic was reported by approach control at 10 O'clock. No altitude was reported and no time to respond was allowed us, as the controller continued xmissions to other aircraft traffic under his control. No further traffic reports were given us for remainder of flight. Visibility was limited by hazy skies and a sun already below the horizon. In our descent through 5000' MSL, approaching 4500' MSL, a shallow right turn was initiated to intercept the 13R localizer. It was during this turn that the twin engine propeller aircraft appeared at 10 O'clock on a collision course. He too was descending. Distance between was approximately 200-300'. We pulled up abruptly and rolled level as the twin engine aircraft passed below us between approximately 50-100'. Time of detection to miss was 2-3 seconds. A contributory factor was operations at horizontal limits of dfw TCA. Also heavy control workload and dusk conditions.

Original NASA ASRS Text

Title: MLG HAD NMAC WITH SMT NW OF DFW.

Narrative: WE WERE APPROX 22 NM NW OF DFW WITH CLRNC FROM APCH CTL TO MAINTAIN 4000' MSL AT 210 KTS, HDG 090 DEGS TO INTERCEPT RWY 13R LOC. ABOUT A MINUTE OR MORE PRIOR TO OCCURRENCE TFC WAS RPTED BY APCH CTL AT 10 O'CLOCK. NO ALT WAS RPTED AND NO TIME TO RESPOND WAS ALLOWED US, AS THE CTLR CONTINUED XMISSIONS TO OTHER ACFT TFC UNDER HIS CTL. NO FURTHER TFC RPTS WERE GIVEN US FOR REMAINDER OF FLT. VISIBILITY WAS LIMITED BY HAZY SKIES AND A SUN ALREADY BELOW THE HORIZON. IN OUR DSCNT THROUGH 5000' MSL, APCHING 4500' MSL, A SHALLOW RIGHT TURN WAS INITIATED TO INTERCEPT THE 13R LOC. IT WAS DURING THIS TURN THAT THE TWIN ENG PROP ACFT APPEARED AT 10 O'CLOCK ON A COLLISION COURSE. HE TOO WAS DSNDING. DISTANCE BTWN WAS APPROX 200-300'. WE PULLED UP ABRUPTLY AND ROLLED LEVEL AS THE TWIN ENG ACFT PASSED BELOW US BTWN APPROX 50-100'. TIME OF DETECTION TO MISS WAS 2-3 SECS. A CONTRIBUTORY FACTOR WAS OPS AT HORIZ LIMITS OF DFW TCA. ALSO HEAVY CTL WORKLOAD AND DUSK CONDITIONS.

Data retrieved from NASA's ASRS site as of August 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.