First officer of an mdt overshot turn to final during a visual approach causing a TCASII TA of another aircraft on approach for the parallel runway.

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Attributes
ACN	313880
Time
Date	199508
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	msl bound lower : 3000 msl bound upper : 3000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord
Operator	common carrier : air carrier
Make Model Name	ATR 72
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : visual enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 3750 flight time type : 100
ASRS Report	313880
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	flight crew : became reoriented flight crew : returned to intended course or assigned course other
Consequence	Other
Miss Distance	horizontal : 4000 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On turning downwind for runway 27R ord controller asked us to turn 180 degrees and call airport/runway in sight. Made heading change and saw runway and was cleared for visual approach. Told to turn 250 degrees to join localizer. Also told by ATC of B757 at 12 O'clock for parallel runway. TCASII gave TA and ATC asked if we were on proper runway 27R? Our aircraft was left of course after rollout on 250 degree heading as assigned. As I continued right turn to correct, captain said we were on wrong runway. However, true or false, at that moment ATC cleared us 'speed at your discretion to taffs, contact the tower at taffs.' we (I) were left of course, however given TCASII and tower's request for confirmation of proper runway this situation pointed out critical spacing and course alignment while conducting parallel approachs. In the future, probably less willing to accept visual until better established inbound.

Original NASA ASRS Text

Title: FO OF AN MDT OVERSHOT TURN TO FINAL DURING A VISUAL APCH CAUSING A TCASII TA OF ANOTHER ACFT ON APCH FOR THE PARALLEL RWY.

Narrative: ON TURNING DOWNWIND FOR RWY 27R ORD CTLR ASKED US TO TURN 180 DEGS AND CALL ARPT/RWY IN SIGHT. MADE HDG CHANGE AND SAW RWY AND WAS CLRED FOR VISUAL APCH. TOLD TO TURN 250 DEGS TO JOIN LOC. ALSO TOLD BY ATC OF B757 AT 12 O'CLOCK FOR PARALLEL RWY. TCASII GAVE TA AND ATC ASKED IF WE WERE ON PROPER RWY 27R? OUR ACFT WAS L OF COURSE AFTER ROLLOUT ON 250 DEG HDG AS ASSIGNED. AS I CONTINUED R TURN TO CORRECT, CAPT SAID WE WERE ON WRONG RWY. HOWEVER, TRUE OR FALSE, AT THAT MOMENT ATC CLRED US 'SPD AT YOUR DISCRETION TO TAFFS, CONTACT THE TWR AT TAFFS.' WE (I) WERE L OF COURSE, HOWEVER GIVEN TCASII AND TWR'S REQUEST FOR CONFIRMATION OF PROPER RWY THIS SIT POINTED OUT CRITICAL SPACING AND COURSE ALIGNMENT WHILE CONDUCTING PARALLEL APCHS. IN THE FUTURE, PROBABLY LESS WILLING TO ACCEPT VISUAL UNTIL BETTER ESTABLISHED INBOUND.

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.