MD80 on visual approach to atl experienced near midair collision with traffic on parallel runway.

Attributes
ACN	601885
Time
Date	200312
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : atl.airport
State Reference	GA
Altitude	msl single value : 3500
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : a80.tracon
Operator	common carrier : air carrier
Make Model Name	MD-88
Operating Under FAR Part	Part 121
Flight Phase	descent : approach descent : intermediate altitude
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : a80.tracon
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial
Experience	flight time last 90 days : 90 flight time total : 15000 flight time type : 8000
ASRS Report	601885
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	conflict : airborne less severe conflict : nmac non adherence : required legal separation
Independent Detector	aircraft equipment : tcas other flight crewa
Resolutory Action	controller : issued new clearance flight crew : took evasive action
Consequence	faa : investigated
Miss Distance	horizontal : 500 vertical : 500
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

On approach to atl, base leg landing runway 9R heading 360 degrees at 3500 ft MSL, at 160 KTS and between 2 NM and 1.5 NM from extended centerline approach gave vector of 330 degrees for separation then another turn to 060 degrees to intercept localizer. Caused overshot that was taking us right at aircraft on final for runway 8L at same altitude. We descended and over-banked to 45 degrees then got short RA before clear of conflict. Told controller we had aircraft on runway 8L in sight then approach told us maintain visual separation and cleared for visual approach. Controller never mentioned this aircraft until we said we had him in sight. Cause of conflict was the turn to 330 degrees for separation at time should have been turned to intercept localizer.

Original NASA ASRS Text

Title: MD80 ON VISUAL APCH TO ATL EXPERIENCED NMAC WITH TFC ON PARALLEL RWY.

Narrative: ON APCH TO ATL, BASE LEG LNDG RWY 9R HEADING 360 DEGS AT 3500 FT MSL, AT 160 KTS AND BTWN 2 NM AND 1.5 NM FROM EXTENDED CTRLINE APCH GAVE VECTOR OF 330 DEGS FOR SEPARATION THEN ANOTHER TURN TO 060 DEGS TO INTERCEPT LOC. CAUSED OVERSHOT THAT WAS TAKING US RIGHT AT ACFT ON FINAL FOR RWY 8L AT SAME ALT. WE DSNDED AND OVER-BANKED TO 45 DEGS THEN GOT SHORT RA BEFORE CLR OF CONFLICT. TOLD CTLR WE HAD ACFT ON RWY 8L IN SIGHT THEN APCH TOLD US MAINTAIN VISUAL SEPARATION AND CLRED FOR VISUAL APCH. CTLR NEVER MENTIONED THIS ACFT UNTIL WE SAID WE HAD HIM IN SIGHT. CAUSE OF CONFLICT WAS THE TURN TO 330 DEGS FOR SEPARATION AT TIME SHOULD HAVE BEEN TURNED TO INTERCEPT LOC.

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.